APA (7th ed.) Citation

Howitt, D., & Cramer, D. Introduction to research methods in psychology (3rd ed.).

Chicago Style (17th ed.) Citation

Howitt, Dennis, and Duncan Cramer. Introduction to Research Methods in Psychology. 3rd ed.

MLA (8th ed.) Citation

Howitt, Dennis, and Duncan Cramer. Introduction to Research Methods in Psychology. 3rd ed.

Warning: These citations may not always be 100% accurate.