Dyfyniad APA

Federico, R. C. (1990). Social welfare in today's world. McGraw-Hill.

Dyfyniad Arddull Chicago

Federico, Ronald C. Social Welfare in Today's World. New York: McGraw-Hill, 1990.

Dyfyniad MLA

Federico, Ronald C. Social Welfare in Today's World. McGraw-Hill, 1990.

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