Cita APA (7th ed.)

Squire, G. R. (1990). The physiology of tropical crop production. C.A.B. International.

Cita Chicago (17th ed.)

Squire, G. R. The Physiology of Tropical Crop Production. Oxford: C.A.B. International, 1990.

Cita MLA (9th ed.)

Squire, G. R. The Physiology of Tropical Crop Production. C.A.B. International, 1990.