APA引文

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

芝加哥风格引文

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

MLA引文

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