Lewin, K. (1947). Frontiers in group dynamics: Concept, method and reality in social science; social equilibria and social change. Human Relations, 1(1), 5–41. doi:10.1177/001872674700100103, LML Per H1.H8 (Contact library staff to interlibrary loan the article)
Books
Lewin, K. (1951). Field theory in social science: Selected theoretical papers. New York, NY: Harper. LML H61. L48 1951 (Available through UMFK microfilm, which we can scan and send to you, or Interlibrary loan)
Donabedian, Avedis (1966). Evaluating the Quality of Medical Care. Health Services Research I. A Series of Papers Commissioned by the Health Services Research Study Section of the United States Public Health Service. Discussed at a Conference Held in Chicago, October 15-16, 1965, The Milbank Memorial Fund Quarterly, Vol. 44, No. 3, July, pp. 166-206. https://www.jstor.org/stable/3348969