APA (7th ed.) Citation

HOWITT & Cramer, D. (2008). Introduction to research methods in psychology. Prentice Hall,.

Chicago Style (17th ed.) Citation

HOWITT and Duncan Cramer. Introduction to Research Methods in Psychology. Harlow, England; New York:: Prentice Hall,, 2008.

MLA (9th ed.) Citation

HOWITT and Duncan Cramer. Introduction to Research Methods in Psychology. Prentice Hall,, 2008.