Dyfyniad APA

Cook, R. B., & Smith, W. E. (1982). Mineralogy of Alabama. Geological Survey of Alabama.

Dyfyniad Arddull Chicago

Cook, Robert B., and W. Everett Smith. Mineralogy of Alabama. University, Ala.: Geological Survey of Alabama, 1982.

Dyfyniad MLA

Cook, Robert B., and W. Everett Smith. Mineralogy of Alabama. Geological Survey of Alabama, 1982.

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