Musser, Gary L., author
John Wiley & Sons, 2004
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Devi Irma Safitri, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Skripsi (Membership)
Devine, Donald F., author
John Wiley & Sons, 1983
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Springer, 2012
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Sheffield, Linda Jensen
John Wiley & Sons, 2000
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