Cita APA (7th ed.)

Monroe, J. S., & Wicander, R. (1997). The changing earth: Exploring geology and evolution (2nd ed.). Wadsworth.

Cita Chicago (17th ed.)

Monroe, James Stewart, i Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Belmont, CA: Wadsworth, 1997.

Cita MLA (9th ed.)

Monroe, James Stewart, i Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Wadsworth, 1997.