APA (7th ed.) Zitazioa
Callaway, H. (1970). The religious system of the Amazulu. C. Struik.
Chicago Style (17th ed.) Zitazioa
Callaway, Henry. The Religious System of the Amazulu. Cape Town: C. Struik, 1970.
MLA (9th ed.) Zitazioa
Callaway, Henry. The Religious System of the Amazulu. C. Struik, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.