APA (7th ed.) Citation

Eastman, C. R., & Zittel, K. A. v. (1937). Text-book of paleontology (2nd rev. and enlarged ed.). Macmillan.

Chicago Style (17th ed.) Citation

Eastman, Charles R., and Karl A. von Zittel. Text-book of Paleontology. 2nd rev. and enlarged ed. London: Macmillan, 1937.

MLA (9th ed.) Citation

Eastman, Charles R., and Karl A. von Zittel. Text-book of Paleontology. 2nd rev. and enlarged ed. Macmillan, 1937.