Dyfyniad APA

R W Allard. (1960). Principles of plant breeding. New York: John Wiley&Sons, Inc.

Dyfyniad Arddull Chicago

R W Allard. Principles of Plant Breeding. New York: John Wiley&Sons, Inc, 1960.

Dyfyniad MLA

R W Allard. Principles of Plant Breeding. New York: John Wiley&Sons, Inc, 1960.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.