APA (7th ed.) Zitazioa
Fry, C. G. (1969). Christianity's greatest challenge. Fellowship of Faith for the Moslems.
Chicago Style (17th ed.) Zitazioa
Fry, C. George. Christianity's Greatest Challenge. Canada: Fellowship of Faith for the Moslems, 1969.
MLA (9th ed.) Zitazioa
Fry, C. George. Christianity's Greatest Challenge. Fellowship of Faith for the Moslems, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.