Dyfyniad APA

Lieberman, B. S., & Kaesler, R. L. (2010). Prehistoric life: Evolution and the fossile record. John Wiley & Sons.

Dyfyniad Arddull Chicago

Lieberman, Bruce S., and Roger L. Kaesler. Prehistoric Life: Evolution and the Fossile Record. Sussex: John Wiley & Sons, 2010.

Dyfyniad MLA

Lieberman, Bruce S., and Roger L. Kaesler. Prehistoric Life: Evolution and the Fossile Record. John Wiley & Sons, 2010.

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