@book{7805, author = {Kotler, Philip. and Armstrong, Gary}, title = {Principles of marketing /}, publisher = {Pearson/Prentice Hall,}, year = {c2008.}, address = {Upper Saddle River, N.J. :}, edition = {12th ed.}, url = {http://www.loc.gov/catdir/toc/ecip078/2007000562.html} }