Hoffman, K. Douglas
Essentials of services marketing
Harcourt College Publishers, 2002
 Buku Teks
Still, Richard R.
Sales management decisions, strategies and cases / Richard R Still
Prentice-Hall, 1988
 Buku Teks
McDaniel, Carl
Marketing essentials
South Western Cengage Learning, 2012
 Buku Teks
Still, Richard R.
Essentials of marketing
Prentice-Hall, 1966
 Buku Teks
Lovelock, Christopher H.
Services marketing
Pearson Prentice Hall, 2001
 Buku Teks