APA (7th ed.) Citation

Newman, B. M., & Newman, P. R. (1983). Understanding Adulthood. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Newman, Barbara M., and Philip R. Newman. Understanding Adulthood. New York: Holt, Rinehart and Winston, 1983.

MLA (9th ed.) Citation

Newman, Barbara M., and Philip R. Newman. Understanding Adulthood. Holt, Rinehart and Winston, 1983.