Dyfyniad APA

Tams, W. P., & Eller, R. D. (2001). The smokeless coal fields of West Virginia: A brief history (2nd ed.). West Virginia University Press.

Dyfyniad Arddull Chicago

Tams, W. P., and Ronald D. Eller. The Smokeless Coal Fields of West Virginia: A Brief History. 2nd ed. Morgantown, W. Va.: West Virginia University Press, 2001.

Dyfyniad MLA

Tams, W. P., and Ronald D. Eller. The Smokeless Coal Fields of West Virginia: A Brief History. 2nd ed. West Virginia University Press, 2001.

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