Cita APA (7th ed.)

Wicander, R. (2021). Geology: Earth in perspective (Third edition.). Cengage Learning, Inc.

Cita Chicago (17th ed.)

Wicander, Reed. Geology: Earth in Perspective. Third edition. Boston: Cengage Learning, Inc, 2021.

Cita MLA (9th ed.)

Wicander, Reed. Geology: Earth in Perspective. Third edition. Cengage Learning, Inc, 2021.