APA (7th ed.) Citation

Shrock, R. R. Principles of invertebrate paleontology. McGraw Hill.

Chicago Style (17th ed.) Citation

Shrock, Robert R. Principles of Invertebrate Paleontology. McGraw Hill.

MLA (8th ed.) Citation

Shrock, Robert R. Principles of Invertebrate Paleontology. McGraw Hill.

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