Dyfyniad APA

Babbie, E. R. (2007). The practice of social research (Eleventh edition.). Thomson/Wadsworth.

Dyfyniad Arddull Chicago

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Australia: Thomson/Wadsworth, 2007.

Dyfyniad MLA

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Thomson/Wadsworth, 2007.

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