Cita APA (7th ed.)

Tyrrell, G. W. (1978). The principles of petrology: An introduction to the science of rocks (2nd ed.). Chapman and Hall.

Cita Chicago (17th ed.)

Tyrrell, G. W. The Principles of Petrology: An Introduction to the Science of Rocks. 2nd ed. London: Chapman and Hall, 1978.

Cita MLA (9th ed.)

Tyrrell, G. W. The Principles of Petrology: An Introduction to the Science of Rocks. 2nd ed. Chapman and Hall, 1978.