Cita APA (7th ed.)
Bernsten, L. (2004). Concepts and challenges earth's structure and history. Globe Fearon.
Cita Chicago (17th ed.)
Bernsten, Leonard. Concepts and Challenges Earth's Structure and History. New York: Globe Fearon, 2004.
Cita MLA (9th ed.)
Bernsten, Leonard. Concepts and Challenges Earth's Structure and History. Globe Fearon, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.