Beyerman KL.
Clin Nurse Spec. 1987;1(1):3-6.
PMID: 3647812

Nicholson D.
N Engl J Med. 1979 Oct 04;301(14):791.
PMID: 481506

Chamings PA.
Bull Tenn Nurses Assoc. 1980 May-Jun;43(3):15-20.
PMID: 6909047

Goodall C.
Nurs Stand. 1992 Sep 23-29;7(1):46-7. doi: 10.7748/ns.7.1.46.s50.
PMID: 1419708

Nerone BJ.
Nurse Educ. 1987 Nov-Dec;12(6):34-5. doi: 10.1097/00006223-198712060-00011.
PMID: 3696524

Nemcek M, Egan PB.
Occup Health Nurs. 1984 Aug;32(8):425-7. doi: 10.1177/216507998403200807.
PMID: 6566076

[No authors listed]
Psychol Bull. 1952 Jul;49(4):389-449.
PMID: 12983455