Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Ader, Herman J., y G. J. Mellenbergh. Research Methodology in the Life, Behavioural, and Social Sciences. London ; Thousand Oaks Calif.: SAGE Publications, 1999.

Cita MLA (9a ed.)

Ader, Herman J., y G. J. Mellenbergh. Research Methodology in the Life, Behavioural, and Social Sciences. SAGE Publications, 1999.