Muller, Max
Amacom, 2011
Buku Teks
Althof Rafaella Ramdhan
Fakultas Ilmu Komputer Universitas Indonesia, 2023
UI - Skripsi Membership
Irvan Wahyu Hutomo
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
Buchman, Joseph
Englewood Cliffs, NJ, Prentice-Hall
Buku Teks
Brown, Robert Goodell
New York, N.Y., Holt, Rinehart and Winston
Buku Teks