Dyfyniad APA

Read, H., & Watson, J. (1975). Introduction to geology: Early stages of earth history. Wiley Eastern.

Dyfyniad Arddull Chicago

Read, H.H, and Janet Watson. Introduction to Geology: Early Stages of Earth History. New York: Wiley Eastern, 1975.

Dyfyniad MLA

Read, H.H, and Janet Watson. Introduction to Geology: Early Stages of Earth History. Wiley Eastern, 1975.

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