Style de citation APA (7e éd.)

Orr, E. L., & Orr, W. L. (1996). Geology of the Pacific Northwest. McGraw-Hill.

Style de citation Chicago (17e éd.)

Orr, Elizabeth L., et William L. Orr. Geology of the Pacific Northwest. New York: McGraw-Hill, 1996.

Style de citation MLA (9e éd.)

Orr, Elizabeth L., et William L. Orr. Geology of the Pacific Northwest. McGraw-Hill, 1996.