APA (7th ed.) Zitazioa
Kottayarikil, C. (1977). Sigmund Freud on religion and morality, a challenge to christianity. Resch.
Chicago Style (17th ed.) Zitazioa
Kottayarikil, Cyriac. Sigmund Freud on Religion and Morality, a Challenge to Christianity. Innsbruck: Resch, 1977.
MLA (9th ed.) Zitazioa
Kottayarikil, Cyriac. Sigmund Freud on Religion and Morality, a Challenge to Christianity. Resch, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.