Cita APA (7th ed.)

Fix & John D. (1995). Astronomy: Journey to the Cosmic Frontier. Mosby-Year Book.

Cita Chicago (17th ed.)

Fix i John D. Astronomy: Journey to the Cosmic Frontier. St. Louis, MO: Mosby-Year Book, 1995.

Cita MLA (9th ed.)

Fix i John D. Astronomy: Journey to the Cosmic Frontier. Mosby-Year Book, 1995.