APA (7th ed.) Citation

Guy, H. A. (1949). Landmarks in the story of Christianity. Macmillan.

Chicago Style (17th ed.) Citation

Guy, Harold A. Landmarks in the Story of Christianity. London: Macmillan, 1949.

MLA (9th ed.) Citation

Guy, Harold A. Landmarks in the Story of Christianity. Macmillan, 1949.

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