Morgan, Arthur James, author
Morgan/Morene, 1973
Buku Teks
Shives, Louise Rebraca, author
Lippincott, 1998
Buku Teks
[edited by] Katherine M. Fortinash, Patricia A. Holoday Worret
St Louis , 2004
Buku Teks
Cook, J. Sue
Addison Wesley Publishing, 1987
Buku Teks
Fontaine, Karen Lee, author
Pearson Education, 2003
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