TYRRELL, G. (1967). Principles of petrology : an introduction: To the science of rocks. Methuen.
Čikaški stil citiranja (17. izdanje)TYRRELL, G.W. Principles of Petrology : An Introduction: To the Science of Rocks. London: Methuen, 1967.
MLA način citiranja (9. izdanje)TYRRELL, G.W. Principles of Petrology : An Introduction: To the Science of Rocks. Methuen, 1967.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.