Grambs, Jean Dresden
Holt Renehart and Winston, 1979
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Edwards, Barba Jean
Mosby, 1981
Buku Teks
American Hospital Association, 1996
Buku Teks
Schweizer, Heidi
Ally & Bacon , 1999
Buku Teks
Kent, Howard, author
Chancellor Press, 1993
Buku Referensi