Bertrand Yakan, H., E. Eugene, and V. Yenwo Nonzienwo. “Impact of Personal Characteristics of Farmers on Cocoa Yields: Case of Centre Region, Mbangassina Municipality, Cameroon”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 36, no. 2, Aug. 2020, pp. 190-02, doi:10.22302/iccri.jur.pelitaperkebunan.v36i2.441.