Dyfyniad APA

Babbie, E. (1992). The practice of social research (6th ed.). Wadsworth.

Dyfyniad Arddull Chicago

Babbie, Earl. The Practice of Social Research. 6th ed. California: Wadsworth, 1992.

Dyfyniad MLA

Babbie, Earl. The Practice of Social Research. 6th ed. Wadsworth, 1992.

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