APA (7th ed.) Citation

Howitt, D., & Cramer, D. (2005). Introduction to research methods in psychology. Pearson/Prentice Hall.

Chicago Style (17th ed.) Citation

Howitt, Dennis, and Duncan Cramer. Introduction to Research Methods in Psychology. Harlow, England, New York: Pearson/Prentice Hall, 2005.

MLA (9th ed.) Citation

Howitt, Dennis, and Duncan Cramer. Introduction to Research Methods in Psychology. Pearson/Prentice Hall, 2005.