Robert D. Stueart y Barbara B. Moran, Library Management, 3ª ed. (Littleton, CO: Libraries Unlimited, 1987), 194. Peter B. Vaill, Managing as a Performing Art (San Francisco: Jossey-Bass, 1991), 2. Abraham H. Maslow, Motivation and Personality, 2ª ed. (New York: Harper & Row, 1970), 35-58. Nancy A. Van House et al., Output Measures for Public Libraries: A Manual of Standardized Procedures, 2ª ed. (Chicago: American Library Association, 1987), 1. Frederick S. Lane, ed., Current Issues in Public Administration, 4ª ed. (Nueva York: St. Martin's Press, 1990), 363. Luther Gulick y Lyndall Urwick, eds., Papers on the Science of Administration (Nueva York: Institute of Public Administration, Columbia University Press, 1937), citado en Robert D. Stueart y Barabara B. Moran, Library Management, p. 12.