Gaya APA
Etzel, M, J. et al
(1984).
Fundamentals of marketing ed 7
(
7)
.
Homewood:
Mc Graw Hill.
Gaya MLA
Etzel, Michael, J. et al.
"Fundamentals of marketing ed 7".
7
Homewood:
Mc Graw Hill,
1984.
Text.