APA (7th ed.) Citation
Heydt, H. J. (1967). A comparison of world religions. Christian Literature Crusade.
Chicago Style (17th ed.) Citation
Heydt, Henry J. A Comparison of World Religions. Fort Washington: Christian Literature Crusade, 1967.
MLA (9th ed.) Citation
Heydt, Henry J. A Comparison of World Religions. Christian Literature Crusade, 1967.
Warning: These citations may not always be 100% accurate.