Dyfyniad APA

(1966). Social welfare and urban development. New York: National association of Social workers.

Dyfyniad Arddull Chicago

Social Welfare and Urban Development. New York: National association of Social workers, 1966.

Dyfyniad MLA

Social Welfare and Urban Development. New York: National association of Social workers, 1966.

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