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McGraw-Hill, 2012
Buku Teks
Maddex, Robert L., author
Routledge, 1996
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Sattler, Helen Roney
Lothrop, Lee & Shepard Books, 1983
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Dorland, W. A. Newman
W.B. Saunders Company , 1994
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Churchill Livingstone, 1989
Buku Referensi