APA (7th ed.) Citation

Tyrrell, G. W. (1929). The principles of petrology: An introduction to the science of rocks ([2nd ed.].). Methuen.

Chicago Style (17th ed.) Citation

Tyrrell, G. W. The Principles of Petrology: An Introduction to the Science of Rocks. [2nd ed.]. London: Methuen, 1929.

MLA (8th ed.) Citation

Tyrrell, G. W. The Principles of Petrology: An Introduction to the Science of Rocks. [2nd ed.]. Methuen, 1929.