Friedlander Walter A. Introduction To Social Welfare [By] Walter A. Friedlander [And] Robert Z. Apte. - 4th ed. - Englewood Cliffs N.J. Prentice-Hall [1974] - XV 560 P. 24 CM. - Prentice-Hall Sociology Series 0 . ENG ISBN: 0134970160 (Hbk)