APA aipamena

Covell, R. R. (1973). An extension seminary primer (2ª ed.). William Carey Library.

Chicago Style aipamena

Covell, Ralph R. An Extension Seminary Primer. 2ª ed. William Carey Library, 1973.

MLA aipamena

Covell, Ralph R. An Extension Seminary Primer. 2ª ed. William Carey Library, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.