APA (7th ed.) Zitazioa
Callahan, K. L. (1990). Effective church leadership: Building on the twelve keys. Jossey-Bass.
Chicago Style (17th ed.) Zitazioa
Callahan, Kennon L. Effective Church Leadership: Building on the Twelve Keys. San Francisco: Jossey-Bass, 1990.
MLA (9th ed.) Zitazioa
Callahan, Kennon L. Effective Church Leadership: Building on the Twelve Keys. Jossey-Bass, 1990.
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