Feigenbaum, Armand Vallin
McGraw-Hill, 1983
Buku Teks
Feigenbaum, Armand Vallin
McGraw-Hill, 1986
Buku Teks
Tanjung, Farrahdina
Universitas Indonesia, 2013
UI - Tesis Membership
Fandy Tjiptono
Andi Offset, 1996
Buku Teks
Besterfield, Dale H.
Pearson Education, 2004
Buku Teks