APA (7e ed.) Bronvermelding

Callahan, K. L. (1983). Twelve keys to an effective church: Strategic planning for mission. Jossey-Bass.

Chicago (17e ed.) Bronvermelding

Callahan, Kennon L. Twelve Keys to an Effective Church: Strategic Planning for Mission. San Francisco: Jossey-Bass, 1983.

MLA (9e ed.) Bronvermelding

Callahan, Kennon L. Twelve Keys to an Effective Church: Strategic Planning for Mission. Jossey-Bass, 1983.