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Andi, 2009
Buku Teks
Weaver, William, author
Erlangga, 1989
Buku Teks
Hasudungan, Maurice F., author
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UI - Skripsi (Membership)
Schodek, Daniel L., author
Eresco, 1991
Buku Teks
Schodek, Daniel L., author
Erlangga , 1999
Buku Teks