Dyfyniad APA

Black, T. R. (2002). Understanding social science research (2nd ed.). Sage.

Dyfyniad Arddull Chicago

Black, Thomas R. Understanding Social Science Research. 2nd ed. London: Sage, 2002.

Dyfyniad MLA

Black, Thomas R. Understanding Social Science Research. 2nd ed. Sage, 2002.

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