H., S., S., L., U., G.(1991).Advanced marketing strategy : phenomena, analysis, and decisions / Glen L. Urban, Steven H. Star .:Simon n Schuster.
Gaya MLA
Star, Steven, H.., Urban, Glen, L.."Advanced marketing strategy : phenomena, analysis, and decisions / Glen L. Urban, Steven H. Star".:Simon n Schuster,1991.Textbook.