Dyfyniad APA

Herman J Ader & Gideon J Mellenbergh. (1999). Research methodology: In the life, behavioural and social sciences. Sage.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.