Dyfyniad APA

Ferman, G. S., & Levin, J. (1975). Social Science Research: A handbook for students. Schenkman.

Dyfyniad Arddull Chicago

Ferman, Gerald S., and Jack Levin. Social Science Research: A Handbook for Students. Massachusetts: Schenkman, 1975.

Dyfyniad MLA

Ferman, Gerald S., and Jack Levin. Social Science Research: A Handbook for Students. Schenkman, 1975.

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