Penggayaan APA

BABBIE, Earl R.. (). The practice of social research . California: Wadsworth.

Chicago Style

BABBIE, Earl R.. The practice of social research. California: Wadsworth, . Text.

MLA Style

BABBIE, Earl R.. The practice of social research. California: Wadsworth, . Text.

Turabian Style

BABBIE, Earl R.. The practice of social research. California: Wadsworth, . Print.