APA(7版)引用形式

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

Chicagoスタイル(17版)引用形式

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

MLA(9版)引用形式

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