APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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