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Buku Teks
Borsboom, Denny, author
Cambridge university press , 2005
Buku Teks
Krol, Ed, author
O`Reilly and Associates, 1992
Buku Teks
edited by Alistair Tough, Michael Moss
Chandos Publishing, 2006
Buku Teks
Hamdi Hidayatullah, author
Fakultas Ilmu Komputer Universitas Indonesia, 2018
UI - Tugas Akhir