APA aipamena

Johnson David T. (1982). The business of farming: Guide to farm business management in the tropics. Macmillan.

Chicago Style aipamena

Johnson David T. The Business of Farming: Guide to Farm Business Management in the Tropics. London: Macmillan, 1982.

MLA aipamena

Johnson David T. The Business of Farming: Guide to Farm Business Management in the Tropics. Macmillan, 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.