Dyfyniad APA

Kalof, L., Dan, A., & Dietz, T. (2010). Essentials of social research. Tata Mc Graw Hill.

Dyfyniad Arddull Chicago

Kalof, Linda, Amy Dan, and Thomas Dietz. Essentials of Social Research. New Delhi: Tata Mc Graw Hill, 2010.

Dyfyniad MLA

Kalof, Linda, et al. Essentials of Social Research. Tata Mc Graw Hill, 2010.

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