Dyfyniad APA

Hatcher, R. D. (1990). Structural geology: Principles, concepts, and problems. Merrill Pub. Co.

Dyfyniad Arddull Chicago

Hatcher, Robert D. Structural Geology: Principles, Concepts, and Problems. Columbus: Merrill Pub. Co, 1990.

Dyfyniad MLA

Hatcher, Robert D. Structural Geology: Principles, Concepts, and Problems. Merrill Pub. Co, 1990.

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