Cita APA (7th ed.)

Murck, B. W., & Skinner, B. J. (1999). Geology today: Understanding our planet. John Wiley.

Cita Chicago (17th ed.)

Murck, Barbara Winifred, i Brian J. Skinner. Geology Today: Understanding Our Planet. New York: John Wiley, 1999.

Cita MLA (9th ed.)

Murck, Barbara Winifred, i Brian J. Skinner. Geology Today: Understanding Our Planet. John Wiley, 1999.