APA aipamena

Fix, J. D. (2006). Astronomy: Journey to the cosmic frontier. New York: McGraw-Hill Higher Education.

Chicago Style aipamena

Fix, John D. Astronomy: Journey to the Cosmic Frontier. New York: McGraw-Hill Higher Education, 2006.

MLA aipamena

Fix, John D. Astronomy: Journey to the Cosmic Frontier. New York: McGraw-Hill Higher Education, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.