APA (7th ed.) Citation

Clark, D. (1970). How to conquer worry. Amazing Prophecy Center.

Chicago Style (17th ed.) Citation

Clark, Doug. How to Conquer Worry. Orange, California: Amazing Prophecy Center, 1970.

MLA (9th ed.) Citation

Clark, Doug. How to Conquer Worry. Amazing Prophecy Center, 1970.

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