Não informado. (1974). AANA Journal. American Association of Nurse Anesthetists.
Lua i Stíl Chicago (17ú heag.)Não informado. AANA Journal. Park Ridge, Ill: American Association of Nurse Anesthetists, 1974.
Lua MLA (8ú heag.)Não informado. AANA Journal. American Association of Nurse Anesthetists, 1974.
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