Cita APA (7th ed.)

Abbott, J., Makeham, J. P., & Payne, W. J. A. (1979). Agricultural economics and marketing in the tropics. Longman.

Cita Chicago (17th ed.)

Abbott, J.C, J. P. Makeham, i W. J. A. Payne. Agricultural Economics and Marketing in the Tropics. London: Longman, 1979.

Cita MLA (9th ed.)

Abbott, J.C, et al. Agricultural Economics and Marketing in the Tropics. Longman, 1979.