APA (7th ed.) Citation

Mackay, J. A. (1964). Ecumenics: The science of the Church universal. Prentice Hall.

Chicago Style (17th ed.) Citation

Mackay, John A. Ecumenics: The Science of the Church Universal. Englewood Cliffs, New Jersey: Prentice Hall, 1964.

MLA (9th ed.) Citation

Mackay, John A. Ecumenics: The Science of the Church Universal. Prentice Hall, 1964.