APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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