APA Citation

Twenhofel, W. H. 1., Shrock, R. R. 1., & Shrock, R. R. (1935). Invertebrate paleontology. New York, London: McGraw-Hill book company, inc..

Chicago Style Citation

Twenhofel, William H. 1875-1957., Robert R. 1904-1993 Shrock, and Robert Rakes Shrock. Invertebrate Paleontology. New York, London: McGraw-Hill book company, inc., 1935.

MLA Citation

Twenhofel, William H. 1875-1957., Robert R. 1904-1993 Shrock, and Robert Rakes Shrock. Invertebrate Paleontology. New York, London: McGraw-Hill book company, inc., 1935.

Warning: These citations may not always be 100% accurate.