APA (7th ed.) Citation

Parker, D. W. H. (1931). Human values: An interpretation of ethics based on a study of values. Wahr.

Chicago Style (17th ed.) Citation

Parker, De Witt Henry. Human Values: An Interpretation of Ethics Based on a Study of Values. Ann Arbor, Michigan: Wahr, 1931.

MLA (9th ed.) Citation

Parker, De Witt Henry. Human Values: An Interpretation of Ethics Based on a Study of Values. Wahr, 1931.