Cita APA (7a ed.)

Wittwer, S. H., Yu, Y., Sun, H., & Wang, L. (1987). Feeding a billon: Frontiers of chinese agriculture. Michigan State University Press.

Cita Chicago Style (17a ed.)

Wittwer, Sylvan H., Youtai Yu, Han Sun, y Lianzheng Wang. Feeding a Billon: Frontiers of Chinese Agriculture. East Lansing: Michigan State University Press, 1987.

Cita MLA (8a ed.)

Wittwer, Sylvan H., et al. Feeding a Billon: Frontiers of Chinese Agriculture. Michigan State University Press, 1987.