APA (7th ed.) Zitazioa

Harrison, E. (2013). Cosmology: The science of the universe. U.pr..

Chicago Style (17th ed.) Zitazioa

Harrison, Edward. Cosmology: The Science of the Universe. Cambridge: U.pr., 2013.

MLA (9th ed.) Zitazioa

Harrison, Edward. Cosmology: The Science of the Universe. U.pr., 2013.