Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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