Chester, Roy
American Management Association, 2008
eBooks
Bowler, Sue
Erlangga, 2003
Buku Teks SO
Keller, Edward A.
Prentice-Hall, 1996
Buku Teks
Sutherland, Lin
University of New South Wales Press, 1995
Buku Referensi
Faundra Ihsan Pratama
Fakultas Teknik Universitas Indonesia, 2020
UI - Skripsi Membership