Não informado. (1962). Half-yearly progress report. West African Cocoa Research Institute.
Lua i Stíl Chicago (17ú heag.)Não informado. Half-yearly Progress Report. Tafo, Gana: West African Cocoa Research Institute, 1962.
Lua MLA (8ú heag.)Não informado. Half-yearly Progress Report. West African Cocoa Research Institute, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.