Copeland, L. O., & McDonald, M. B. (1995). Principles of seed science and technology (3a. ed.). Kluwer Academic.
Cita Chicago (17th ed.)Copeland, Larry O., i Miller B. McDonald. Principles of Seed Science and Technology. 3a. ed. Boston: Kluwer Academic, 1995.
Cita MLA (9th ed.)Copeland, Larry O., i Miller B. McDonald. Principles of Seed Science and Technology. 3a. ed. Kluwer Academic, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.