Dyfyniad APA

Eckhardt, K. W., & Ermann,M.David. (1977). Social research methods: Perspective theory and analysis. Randon.

Dyfyniad Arddull Chicago

Eckhardt, Kenneth W., and Ermann,M.David. Social Research Methods: Perspective Theory and Analysis. New York: Randon, 1977.

Dyfyniad MLA

Eckhardt, Kenneth W., and Ermann,M.David. Social Research Methods: Perspective Theory and Analysis. Randon, 1977.

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