Husted GS, Miller MC, Wilczynski EM.
Nurs Life. 1987 Sep-Oct;7(5):40-1.
PMID: 3650737

Faulkner D.
Can Nurse. 1997 Apr;93(4):35-8.
PMID: 9214876

Haga E.
Tidsskr Nor Laegeforen. 1997 Oct 10;117(24):3475.
PMID: 9411902

Lynn VR.
AARN News Lett. 1984 Feb;40(2):16-7.
PMID: 6560979

Arthur D, Randle J.
Aust J Adv Nurs. 2007 Mar-May;24(3):60-4.
PMID: 17518168

Grainger RD.
Am J Nurs. 1990 Oct;90(10):12.
PMID: 2220901

Goetz CS, Vonfrolio LG.
Nursing. 1991 May;21(5):112, 114, 116 passim.
PMID: 2027559