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.
Atenció: Aquestes cites poden no estar 100% correctes.