Dyfyniad APA

Breakwell, G. . M., Smith, J. A., & Wright, D. B. (2012). Research methods in psychology (4th ed.). Sage.

Dyfyniad Arddull Chicago

Breakwell, Glynis M., Jonathan A. Smith, and Daniel B. Wright. Research Methods in Psychology. 4th ed. Los Angeles: Sage, 2012.

Dyfyniad MLA

Breakwell, Glynis M., et al. Research Methods in Psychology. 4th ed. Sage, 2012.

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