APA (7th ed.) Citation

Mackenzie, K. D. (1938). Union of christendom (Special ed. for the Religious Book Club.). Religious Book Club.

Chicago Style (17th ed.) Citation

Mackenzie, Kenneth Donald. Union of Christendom. Special ed. for the Religious Book Club. London: Religious Book Club, 1938.

MLA (9th ed.) Citation

Mackenzie, Kenneth Donald. Union of Christendom. Special ed. for the Religious Book Club. Religious Book Club, 1938.

Warning: These citations may not always be 100% accurate.