APA citiranje

Engels, J. M., Bartley, B. G., & Enríquez, G. A. (1979). Cocoa descriptors, their states and modus operandi.

Citación estilo Chicago

Engels, Jon M.M., Basil G.D Bartley, y Gustavo A. Enríquez. Cocoa Descriptors, Their States and Modus Operandi. 1979.

MLA citiranje

Engels, Jon M.M., Basil G.D Bartley, y Gustavo A. Enríquez. Cocoa Descriptors, Their States and Modus Operandi. 1979.