Cita APA (7th ed.)

Copeland, L. O., & McDonald, M. B. (2001). Principles of seed science and technology (Fourth edition.). Kluwer Academic Publishers.

Cita Chicago (17th ed.)

Copeland, L. O., i M. B. McDonald. Principles of Seed Science and Technology. Fourth edition. Boston: Kluwer Academic Publishers, 2001.

Cita MLA (8th ed.)

Copeland, L. O., i M. B. McDonald. Principles of Seed Science and Technology. Fourth edition. Kluwer Academic Publishers, 2001.