Não informado. (1963). Half-yearly progress report. Cocoa Research Institute of Ghana.
Style de citation Chicago (17e éd.)Não informado. Half-yearly Progress Report. Tafo, Gana: Cocoa Research Institute of Ghana, 1963.
Style de citation MLA (8e éd.)Não informado. Half-yearly Progress Report. Cocoa Research Institute of Ghana, 1963.
Attention : ces citations peuvent ne pas être correctes à 100%.