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Buku Referensi
Kicthen, Ronald, author
Oxford : Newnes, 2003
Buku Referensi
Ari Dwi Jayanti, author
Universitas Indonesia, 2014
UI - Skripsi (Membership)
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Buku Teks
Jamie V. Trapp, Tomas Kron, editor
Taylor & Francis Group, 2008
Buku Teks