APA (7th ed.) Citation

Williams, C. N. (1975). The agronomy of the major tropical crops. Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Williams, C. N. The Agronomy of the Major Tropical Crops. London [u.a.]: Oxford Univ. Press, 1975.

MLA (9th ed.) Citation

Williams, C. N. The Agronomy of the Major Tropical Crops. Oxford Univ. Press, 1975.