APA aipamena

Wellman, F. L. (1961). Coffee botany, cultivation and utilization.

Chicago Style aipamena

Wellman, Frederick L. Coffee Botany, Cultivation and Utilization. 1961.

MLA aipamena

Wellman, Frederick L. Coffee Botany, Cultivation and Utilization. 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.