APA aipamena

Callahan, K. L. (1983). Twelve keys to an effective church: Strategic planning for mission. Harper & Row.

Chicago Style aipamena

Callahan, Kennon L. Twelve Keys to an Effective Church: Strategic Planning for Mission. Cambridge: Harper & Row, 1983.

MLA aipamena

Callahan, Kennon L. Twelve Keys to an Effective Church: Strategic Planning for Mission. Harper & Row, 1983.