Dyfyniad APA

Stacey, F. D., & Hodgkinson, J. H. (2013). The earth as a cradle for life. World Scientific.

Dyfyniad Arddull Chicago

Stacey, F. D., and Jane H. Hodgkinson. The Earth as a Cradle for Life. Hackensack, NJ: World Scientific, 2013.

Dyfyniad MLA

Stacey, F. D., and Jane H. Hodgkinson. The Earth as a Cradle for Life. World Scientific, 2013.

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