Dyfyniad APA

Goodenough, U., & Levine, R. P. (1974). Genetics. New York: Holt, Rinehart and Winston.

Dyfyniad Arddull Chicago

Goodenough, Ursula, và Robert Paul Levine. Genetics. New York: Holt, Rinehart and Winston, 1974.

Dyfyniad MLA

Goodenough, Ursula, và Robert Paul Levine. Genetics. New York: Holt, Rinehart and Winston, 1974.

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