APA (7th ed.) Zitazioa
Engel, J. F. (1984). How to communicate the Gospel effectively. Africa Christian press.
Chicago Style (17th ed.) Zitazioa
Engel, James F. How to Communicate the Gospel Effectively. Achimota,Ghana: Africa Christian press, 1984.
MLA (9th ed.) Zitazioa
Engel, James F. How to Communicate the Gospel Effectively. Africa Christian press, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.