Gaya APA

Hamel, G., Heene, A. (1994). Competence based competition (Edisi 1). New York, USA: John Willey and Son.

Gaya MLA

Hamel, Gary., Heene, Aime. "Competence based competition". Edisi 1 New York, USA: John Willey and Son, 1994. Agribisnis.