Literature in Review: FAMILIES: Applications of Social Learning to Family Life. G. R. Patterson,Ph.D. Champaign,Ill.: Research Press,1971. 143 pp

HOW TO USE CONTINGENCY CONTRACTING IN THE CLASSROOM. Lloyd Homme , Attila P. Csanyi , Mary Ann Gonzales , and James R. Reche with an Introduction by Wesley C. Becker. Champaign, Illinois: Research Press, 1970. 130 pp.