APA (7th ed.) Citation

Hatch, F. H., Wells, A. K., & Wells, M. K. (1961). Petrology of the igneous rocks (Completely revised 12th ed.). George Allen & Unwin Ltd.

Chicago Style (17th ed.) Citation

Hatch, F. H., A. K. Wells, and M. K. Wells. Petrology of the Igneous Rocks. Completely revised 12th ed. London: George Allen & Unwin Ltd, 1961.

MLA (9th ed.) Citation

Hatch, F. H., et al. Petrology of the Igneous Rocks. Completely revised 12th ed. George Allen & Unwin Ltd, 1961.