APA (7th ed.) Citation

Martin, A. C., & Barkley, W. D. (2000). Seed identification manual. Blackburn Press.

Chicago Style (17th ed.) Citation

Martin, Alexander Campbell, and William D. Barkley. Seed Identification Manual. [Caldwell, NJ]: Blackburn Press, 2000.

MLA (9th ed.) Citation

Martin, Alexander Campbell, and William D. Barkley. Seed Identification Manual. Blackburn Press, 2000.