APA (7th ed.) Citation

Curwen, H. G. (1965). An illustrated elementary classification of minerals, rocks, and fossils. Pergamom Press.

Chicago Style (17th ed.) Citation

Curwen, H. G. An Illustrated Elementary Classification of Minerals, Rocks, and Fossils. Oxford: Pergamom Press, 1965.

MLA (8th ed.) Citation

Curwen, H. G. An Illustrated Elementary Classification of Minerals, Rocks, and Fossils. Pergamom Press, 1965.