Dyfyniad APA

Wellington, J., & Szczerbiński, M. (2007). Research methods for the social sciences. Continuum International Pub. Group.

Dyfyniad Arddull Chicago

Wellington, Jerry, and Marcin Szczerbiński. Research Methods for the Social Sciences. London ; New York: Continuum International Pub. Group, 2007.

Dyfyniad MLA

Wellington, Jerry, and Marcin Szczerbiński. Research Methods for the Social Sciences. Continuum International Pub. Group, 2007.

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