APA (7th ed.) Citation

Knox, D. (1971). Marriage happiness: A behavioral approach to counseling. Research Press Co..

Chicago Style (17th ed.) Citation

Knox, David. Marriage Happiness: A Behavioral Approach to Counseling. Champaign, Ill.: Research Press Co., 1971.

MLA (9th ed.) Citation

Knox, David. Marriage Happiness: A Behavioral Approach to Counseling. Research Press Co., 1971.