Dyfyniad APA

Yegidis, B. l., & Weinbach, R. W. (1991). Instructor's manual for research methods... Longman.

Dyfyniad Arddull Chicago

Yegidis, Bonnie l., and Robert W. Weinbach. Instructor's Manual for Research Methods... New York: Longman, 1991.

Dyfyniad MLA

Yegidis, Bonnie l., and Robert W. Weinbach. Instructor's Manual for Research Methods... Longman, 1991.

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