Ripple, L., Polemis, B. W., & Alexander, E. (1964). Motivation, capacity, and opportunity: Studies in casework theory and practice. University of Chicago.
Chicago-čujuhus (17. p.)Ripple, Lilian, Bernice W. Polemis, juo Ernestina Alexander. Motivation, Capacity, and Opportunity: Studies in Casework Theory and Practice. Chicago: University of Chicago, 1964.
MLA-čujuhus (9. p.)Ripple, Lilian, et al. Motivation, Capacity, and Opportunity: Studies in Casework Theory and Practice. University of Chicago, 1964.
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