Dyfyniad APA

Condie, K. C. (2011). Earth as an evolving planetary system Ed.2. Elsevier.

Dyfyniad Arddull Chicago

Condie, Kent C. Earth as an Evolving Planetary System Ed.2. New York: Elsevier, 2011.

Dyfyniad MLA

Condie, Kent C. Earth as an Evolving Planetary System Ed.2. Elsevier, 2011.

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