APA (7th ed.) Zitazioa
Arny, T. T. (1994). Explorations: An introduction to astronomy. Mosby.
Chicago Style (17th ed.) Zitazioa
Arny, Thomas T. Explorations: An Introduction to Astronomy. St. Louis: Mosby, 1994.
MLA (9th ed.) Zitazioa
Arny, Thomas T. Explorations: An Introduction to Astronomy. Mosby, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.