1. Indicators of quality in doctoral programs in nursing;Journal of Professional Nursing,1987
2. The Oxford dictionary of philosophy;Blackburn,1996
3. Nursing theory, nursing research, and nursing practice: Connected or separate?;Blegen,1997
4. Taking the naturalistic turn or how real philosophy of science is done;Callebaut,1993
5. Nursing theory development: Where we have been and where we are going;Chinn,1983