Cita APA

Fix, J. D. (1999). Astronomy: Journey to the cosmic frontier. WCB/McGraw-Hill.

Chicago Style Citation

Fix, John D. Astronomy: Journey to the Cosmic Frontier. WCB/McGraw-Hill, 1999.

Cita MLA

Fix, John D. Astronomy: Journey to the Cosmic Frontier. WCB/McGraw-Hill, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.