Garner AE, Thillen C.
J Nurs Educ. 1977 Sep;16(7):27-30.
PMID: 20433

Kryger L.
Sygeplejersken. 1989 May 17;89(20):34-5.
PMID: 2763081

Greenleaf NP.
Nurs Forum. 1990;25(3):23-9. doi: 10.1111/j.1744-6198.1990.tb00854.x.
PMID: 2281001

Balogh R, Beattie A.
Nurs Times. 1991 Nov 20-26;87(47):44-7.
PMID: 1754434

Gott M.
Nurs Times. 1982 Apr 21-27;78(16):suppl 11:41-4.
PMID: 6918984

[No authors listed]
Pflege Z. 1999 Dec;52(12):suppl 1-8.
PMID: 10948932

Oermann MH.
Nurse Educ. 2019 Jan/Feb;44(1):1. doi: 10.1097/NNE.0000000000000630.
PMID: 30499872