APA (7th ed.) Zitazioa
Hill, T. E. (1961). Contemporary theories of knowledge (ed.). Ronald Press Co..
Chicago Style (17th ed.) Zitazioa
Hill, Thomas English. Contemporary Theories of Knowledge. ed. New York: Ronald Press Co., 1961.
MLA (9th ed.) Zitazioa
Hill, Thomas English. Contemporary Theories of Knowledge. ed. Ronald Press Co., 1961.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.