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The German urban plan is implemented by moving the population to New Deido, New Akwa and New Bell and by creating a 1 km Freie Zone to separate those areas from the European city.
^ abcdeMuluh Henry; Ndoh Bertha (2002), "Evolution of the Media in Cameroon", in Festus Eribo; Enoh Tanjong (eds.), Journalism and mass communication in Africa: Cameroon, Lanham, Maryland, US: Lexington Books, ISBN 0739103776
^ abcdefRalph A. Austen; Jonathan Derrick (1999), Middlemen of the Cameroons Rivers: the Duala and their hinterland, c.1600-c.1960, Cambridge: Cambridge University Press, ISBN 0521562287
^Paul G. Halpern (1994), A naval history of World War I, Annapolis, Maryland: Naval Institute Press, ISBN 0870212664
^Stephen Pope; Elizabeth-Anne Wheal (1995). "Select Chronology". Dictionary of the First World War. Macmillan. ISBN 978-0-85052-979-1.
^Meredith Terretta (2013). Petitioning for Our Rights, Fighting for Our Nation: The History of the Democratic Union of Cameroonian Women, 1949-1960. Bamenda: Langaa. ISBN 9789956728053.
^Mark D. DeLancey; et al. (2010), Historical dictionary of the Republic of Cameroon (4th ed.), Lanham, Maryland, US: Scarecrow Press, ISBN 9780810858244
^Fanny Pigeaud (2011). "Cameroon". In Andreas Mehler; et al. (eds.). Africa Yearbook: Politics, Economy and Society South of the Sahara in 2010. Koninklijke Brill. pp. 211–220. ISBN 978-90-04-20556-7.
D. Gardinier (1969). "Urban Politics in Douala, Cameroun". African Urban Notes. 4.
Joyce Sween; Remi Clignet (1969). "Urban Unemployment as a Determinant of Political Unrest: The Case Study of Douala, Cameroon". Canadian Journal of African Studies. 3.
Remi Clignet; Frank Jordan (1971). "Urbanization and Social Differentiation in Africa: A Comparative Analysis of the Ecological Structures of Douala and Yaoundé". Cahiers d'Études africaines. 11 (42): 261–297. doi:10.3406/cea.1971.2803 – via Persee.fr.
Lynn Schler (2002). "Looking through a Glass of Beer: Alcohol in the Cultural Spaces of Colonial Douala, 1910-1945". International Journal of African Historical Studies. 35 (2/3): 315–334. doi:10.2307/3097616. JSTOR3097616. PMID17494231.
Lynn Schler (2003). "Ambiguous Spaces: The Struggle over African Identities and Urban Communities in Colonial Douala, 1914-45". Journal of African History. 44.
Lynn Schler (2003). "Bridewealth, Guns and Other Status Symbols: Immigration and Consumption in Colonial Douala". Journal of African Cultural Studies. 16.
Paul Tiyambe Zeleza; Dickson Eyoh, eds. (2003). "Douala, Cameroon". Encyclopedia of Twentieth-Century African History. Routledge. ISBN 0415234794.
Poverty and Urban Mobility in Douala, World Bank, 2004
Lynn Schler (2005). "History, the Nation-State, and Alternative Narratives: An Example from Colonial Douala". African Studies Review. 48.
Kevin Shillington, ed. (2005). "Douala". Encyclopedia of African History. Fitzroy Dearborn. ISBN 978-1-57958-245-6.
Lucia Babina and Marilyn Douala Bell, ed. (2007). Douala in Translation: A View of the City and its Creative Transformative Potentials. Rotterdam: Episode.
Marta Dorenda-Zaborowicz (2011). "Douala: A City of Lost Hopes? Consequences of Decolonisation in Africa Versus Sustainable Development". Problemy Ekorozwoju - Problems of Sustainable Development. 6.
Adrien Bitond (2012). "Les foyers socioculturels a Douala, 'villages en ville' ou espaces publics de proximite?". In Thomas Atenga, Georges Madib (ed.). La communication au Cameroun (in French). Archives contemporaines. ISBN 9782813000927.
Collectif; Auzias, Dominique; Labourdette, Jean-Paul (2012). "Douala". Cameroun. Le Petit Futé (in French). ISBN 9782746967328.
in German
Ernst Vollbehr (1912), "Duala", Mit Pinsel und Palette durch Kamerun (in German), Leipzig: List & von Bressensdorf, OCLC9352214