1. Friendship;Alberoni,1987
2. Philosophy of caring;Alvsvåg,2006
3. Two foundational ideas for a philosophy of caring;Baird;Journal of the Medical Association of the State of Alabama,1982
4. Nurses’ perceptions of care and caring;Bassett;International Journal of Nursing Practice,2002
5. The Human Being—Who is She?;Boyer,1973