Ndongko, W. A. (1975). Planning for economic development in a federal state: The case of Cameroon, 1960-1971. Weltforum Verlag.
Lua i Stíl Chicago (17ú heag.)Ndongko, Wilfred A. Planning for Economic Development in a Federal State: The Case of Cameroon, 1960-1971. Munchen: Weltforum Verlag, 1975.
Lua MLA (8ú heag.)Ndongko, Wilfred A. Planning for Economic Development in a Federal State: The Case of Cameroon, 1960-1971. Weltforum Verlag, 1975.
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