Dyfyniad APA

321924 Hessler, R. M. (1992). Social research methods. Saint Paul, MN : West Pub..

Dyfyniad Arddull Chicago

321924 Hessler, Richard M. Social Research Methods. Saint Paul, MN : West Pub., 1992.

Dyfyniad MLA

321924 Hessler, Richard M. Social Research Methods. Saint Paul, MN : West Pub., 1992.

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