APA (7th ed.) Citation

Ader, H. J., & Mellenbergh, G. J. (1999). Research methodology in the life, behavioural, and social sciences. Sage.

Chicago Style (17th ed.) Citation

Ader, Herman J., and Gideon J. Mellenbergh. Research Methodology in the Life, Behavioural, and Social Sciences. London: Sage, 1999.

MLA (9th ed.) Citation

Ader, Herman J., and Gideon J. Mellenbergh. Research Methodology in the Life, Behavioural, and Social Sciences. Sage, 1999.