APA (7th ed.) Citation

Mackay, J. A. (1941). A preface to Christian theology. The Macmillan company.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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