APA (7th ed.) Citation

Langdridge, D., & Hagger-Johnson, G. (2013). Introduction to research methods and data analysis in psychology (3rd ed.). Pearson.

Chicago Style (17th ed.) Citation

Langdridge, Darren, and Gareth Hagger-Johnson. Introduction to Research Methods and Data Analysis in Psychology. 3rd ed. Harlow, England ; New York: Pearson, 2013.

MLA (9th ed.) Citation

Langdridge, Darren, and Gareth Hagger-Johnson. Introduction to Research Methods and Data Analysis in Psychology. 3rd ed. Pearson, 2013.