APA (7th ed.) Citation

Roberts, J. L., & Barron, L. (1938). Modern dahlias. Doubleday, Doran & Company, inc..

Chicago Style (17th ed.) Citation

Roberts, John Louis, and Leonard Barron. Modern Dahlias. Garden City, N.Y.: Doubleday, Doran & Company, inc., 1938.

MLA (9th ed.) Citation

Roberts, John Louis, and Leonard Barron. Modern Dahlias. Doubleday, Doran & Company, inc., 1938.