Cateora, P. R. (1990). International marketing (7th ed.). Irwin.
Lua i Stíl Chicago (17ú heag.)Cateora, Philip R. International Marketing. 7th ed. Homewood: Irwin, 1990.
Lua MLA (9ú heag.)Cateora, Philip R. International Marketing. 7th ed. Irwin, 1990.
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