Abrahamson, Mark, author
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Buku Teks
Gottdiener, M., author
Sage, 2010
Buku Teks
Atkinson, Rowland, author
Routledge, 2019
Buku Teks
Flanagan, William G., author
Allyn and Bacon, 1990
Buku Teks
Muhammad Luthfi Eryando, author
Fakultas Teknik Universitas Indonesia, 2017
UI - Skripsi (Membership)