Cita APA (7th ed.)

PLUMER, C. C., & McGEARY, D. (1985). Physical geology. WCB.

Cita Chicago (17th ed.)

PLUMER, Charles C., i David McGEARY. Physical Geology. Dubuque: WCB, 1985.

Cita MLA (9th ed.)

PLUMER, Charles C., i David McGEARY. Physical Geology. WCB, 1985.