Evans, Philip, author
Harvard Business School Press, 2000
Buku Teks
Marcel, author
Fakultas Ilmu Komputer Universitas Indonesia, 2013
UI - Tugas Akhir
Parker, Marilyn M.
Prentice-Hall, 1988
Buku Teks
Davis, Gordon B., author
Business One Irwin, 1993
Buku Referensi
Luftman, Jerry N., author
Pearson Education, 2004
Buku Teks