APA Edition Citation

Shrock, R. R. T. (1953). Principles of invertebrate paleontology.

Chicago Edition Citation

Shrock, Robert R; Twenhofel. Principles of Invertebrate Paleontology. McGraw-Hill book Co, Inc., NewYork, 1953.

MLA Edition Citation

Shrock, Robert R; Twenhofel. Principles of Invertebrate Paleontology. 1953.

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