Czinkota M. R., Ronkainen I. A., . (2002). International Marketing. New York: Thomson South-Western.
Czinkota Michael R, Ronkainen Ilkka A, . 2002. International Marketing. New York: Thomson South-Western.
Czinkota Michael R, Ronkainen Ilkka A, . International Marketing. New York: Thomson South-Western. 2002.
