Citazione APA

Callahan, K. L. (1990). Effective church leadership: Building on the twelve keys. Harper & Row.

Stile di citazione Chicago

Callahan, Kennon L. Effective Church Leadership: Building on the Twelve Keys. San Francisco: Harper & Row, 1990.

Citazione MLA

Callahan, Kennon L. Effective Church Leadership: Building on the Twelve Keys. Harper & Row, 1990.