Dyfyniad APA

Owen, C., Pirie, D., & Draper, G. (2010). Earth lab: Exploring the earth sciences (3rd ed.). Brooks/Cole / Cengage Learning.

Dyfyniad Arddull Chicago

Owen, Claudia, Diane Pirie, and Grenville Draper. Earth Lab: Exploring the Earth Sciences. 3rd ed. Belmont, Calif: Brooks/Cole / Cengage Learning, 2010.

Dyfyniad MLA

Owen, Claudia, et al. Earth Lab: Exploring the Earth Sciences. 3rd ed. Brooks/Cole / Cengage Learning, 2010.

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