Dyfyniad APA

Branson, E., & Tarr, W. (1952). Introduction to geology rev. by Carl C Branson &WD Keller (3rd ed.).

Dyfyniad Arddull Chicago

Branson, Eb, and Wa Tarr. Introduction to Geology Rev. by Carl C Branson &WD Keller. 3rd ed. 1952.

Dyfyniad MLA

Branson, Eb, and Wa Tarr. Introduction to Geology Rev. by Carl C Branson &WD Keller. 3rd ed. 1952.

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