Cita APA

Abbott, J. C., & Makeham, J. P. (1979). Agricultural economics and marketing in the tropics.

Citación estilo Chicago

Abbott, J C., y J P. Makeham. Agricultural Economics and Marketing in the Tropics. UK, Longman, 1979.

Cita MLA

Abbott, J C., y J P. Makeham. Agricultural Economics and Marketing in the Tropics. 1979.