Copeland, L. O., & McDonald, M. B. (2001). Principles of seed science and technology (4a. ed.). Kluwer Academic.
Chicago-čujuhus (17. p.)Copeland, Larry O., juo Miller B. McDonald. Principles of Seed Science and Technology. 4a. ed. Boston: Kluwer Academic, 2001.
MLA-čujuhus (9. p.)Copeland, Larry O., juo Miller B. McDonald. Principles of Seed Science and Technology. 4a. ed. Kluwer Academic, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.