Não informado. (2016). Image. Sigma Theta Tau National Honor Society of Nursing.
Lua i Stíl Chicago (17ú heag.)Não informado. Image. Indianapolis, Ind: Sigma Theta Tau National Honor Society of Nursing, 2016.
Lua MLA (8ú heag.)Não informado. Image. Sigma Theta Tau National Honor Society of Nursing, 2016.
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