APA (7th ed.) Citation

TYRRELL, G. (1967). Principles of petrology : an introduction: To the science of rocks. Methuen.

Chicago Style (17th ed.) Citation

TYRRELL, G.W. Principles of Petrology : An Introduction: To the Science of Rocks. London: Methuen, 1967.

MLA (9th ed.) Citation

TYRRELL, G.W. Principles of Petrology : An Introduction: To the Science of Rocks. Methuen, 1967.