Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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