APA ציטוט

Twenhofel, W. H., & Shrock, R. R. (1935). Invertebrate paleontology. McGraw-Hill book company, inc.

Chicago Style (17th ed.) Citation

Twenhofel, William H., and Robert R. Shrock. Invertebrate Paleontology. New York, London: McGraw-Hill book company, inc, 1935.

ציטוט MLA

Twenhofel, William H., and Robert R. Shrock. Invertebrate Paleontology. McGraw-Hill book company, inc, 1935.