1. “Patterns of socialization into the professions: The student nurse,”;Simpson;Sociological Inquiry,1967
2. Conceptual Bases of Professional Nursing;Leddy,1984
3. “Role attitudes: A measurement problem,”;Hinshaw,1978
4. Foundations of Behavioral Research: Educational, Psychological, and Sociological Inquiry;Kerlinger,1973
5. Leddy Conceptual Bases of Professional Nursing 54.