Sazonova TE, Rusakova LG.
Hum Physiol. 1978 Sep-Oct;4(5):725-9.
PMID: 757554

Holliman JM.
Nurs Outlook. 1977 Nov;25(11):721-3.
PMID: 243782

Cacchione PZ.
Clin Nurs Res. 2015 Feb;24(1):3-6. doi: 10.1177/1054773814566357.
PMID: 25564320

Natapoff JN, Pennington EA.
NLN Publ. 1986 Jun;(15):31-47.
PMID: 3636803

[No authors listed]
Kango Kyoiku. 1977 Dec;18(12):758-64.
PMID: 244602

McElmurry BJ, Krueger JC, Parsons LC.
Nurs Res. 1982 Jan-Feb;31(1):5-10.
PMID: 6922462

Pressler JL, Kenner C.
Nurse Educ. 2008 Sep-Oct;33(5):187-9. doi: 10.1097/01.NNE.0000312218.75084.93.
PMID: 18769314