APA (7th ed.) Citation

Langdridge, D., & Hagger-Johnson, G. (2009). Introduction to research methods and data analysis in psychology (2nd ed.). Pearson Prentice Hall.

Chicago Style (17th ed.) Citation

Langdridge, Darren, and Gareth Hagger-Johnson. Introduction to Research Methods and Data Analysis in Psychology. 2nd ed. Harlow, England ; New York: Pearson Prentice Hall, 2009.

MLA (9th ed.) Citation

Langdridge, Darren, and Gareth Hagger-Johnson. Introduction to Research Methods and Data Analysis in Psychology. 2nd ed. Pearson Prentice Hall, 2009.