APA (7th ed.) Citation

Columella, L. J. M., Forster, E. S., & Heffner, E. H. (1941). On agriculture. Harvard University Press.

Chicago Style (17th ed.) Citation

Columella, Lucius Junius Moderatus, E. S. Forster, and Edward H. Heffner. On Agriculture. Cambridge, MA: Harvard University Press, 1941.

MLA (8th ed.) Citation

Columella, Lucius Junius Moderatus, et al. On Agriculture. Harvard University Press, 1941.