ClarkeHelen J.The Rosenzweig Picture-Frustration Study. In AndersonH. H., and AndersonGladys L. (Editors), An introduction to projective techniques.Englewood Cliffs, New Jersey: Prentice-Hall, 1961. Pp. 312–323.
2.
GlasserW.Reality therapy.New York: Harper and Row, 1965.
3.
NevilleD.Peabody Inventory Rating Scale on Emotional Disturbance.Nashville: Author, 1965.
4.
OsgoodC. E., SuciG. T., and TannenbaumP. H.The measurement of meaning.Urbana: University of Illinois Press, 1957.
5.
WalkerHelen, and LevJ.Statistical inference.New York: Henry Holt, 1953.