Joo, Yoon Jee, author
Fakultas Ilmu Komputer Universitas Indonesia, 2014
UI - Tugas Akhir
Schiffman, Leon G., author
Pearson Education International, 2004
Buku Teks
Lehmann, Donald R., author
Topan, 1989
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Cut Nisa Amalia Sofyan, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
Walters, C. Glenn, author
South Western Publishing, 1989
Buku Teks