APA (7th ed.) Citation

Roberts, R. W. (1956). Modern farming (2d ed.). Lippincott.

Chicago Style (17th ed.) Citation

Roberts, Roy W. Modern Farming. 2d ed. Chicago: Lippincott, 1956.

MLA (9th ed.) Citation

Roberts, Roy W. Modern Farming. 2d ed. Lippincott, 1956.