Dyfyniad APA

Horowitz, A. S., & Potter, P. E. (1971). Introductory petrography of fossils. Springer-Verlag.

Dyfyniad Arddull Chicago

Horowitz, Alan Stanley, and Paul Edwin Potter. Introductory Petrography of Fossils. New York: Springer-Verlag, 1971.

Dyfyniad MLA

Horowitz, Alan Stanley, and Paul Edwin Potter. Introductory Petrography of Fossils. Springer-Verlag, 1971.

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