APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.