APA aipamena

Fix, J. D. (2008). Astronomy: Journey to the cosmic frontier. Boston: McGraw-Hill Higher Education.

Chicago Style aipamena

Fix, John D. Astronomy: Journey to the Cosmic Frontier. Boston: McGraw-Hill Higher Education, 2008.

MLA aipamena

Fix, John D. Astronomy: Journey to the Cosmic Frontier. Boston: McGraw-Hill Higher Education, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.