APA Style
Kotler, P. et al (2005).
Principles of marketing (4th European ed).
Harlow, England:
Prentice Hall/FinancialTimes.
MLA Style
Kotler, Philip. et al.
"Principles of marketing".
4th European ed
Harlow, England:
Prentice Hall/FinancialTimes,
2005.
Computer File.