Hill, Polly
The gold coart cocoa farmer : a premilinary survey Polly Hill
London Oxford University Press 1956,
Buku Teks
Kelley, Jeff
Learn cocoa touch for iOS
Springer, 2012
eBooks
Heijbroek, A.M.A.
The cocoa and chocolate market
Rabobank International Group, 1995
Buku Teks
Adams, F. Gerard
Econometric models of world agricultural commodity markets cocoa, coffee, tea, wool, cotton, sugar, wheat, rice F. Gerard Adams and Jere R. Behrman
Mass. Ballinger Pub. Co , 1976
Buku Teks
Lieu, D.K.
China's economic stabilization and reconstruction / by D. K. Lieu
Rutgers University Press, 1948
Buku Teks