Cita APA (7a ed.)

Mackay, J. A. (1941). A preface to Christian Theology. The Macmillan Company.

Cita Chicago Style (17a ed.)

Mackay, John A. A Preface to Christian Theology. New York: The Macmillan Company, 1941.

Cita MLA (9a ed.)

Mackay, John A. A Preface to Christian Theology. The Macmillan Company, 1941.