Terpstra, V. (2001). International marketing (8th.). Harcourt.
Lua i Stíl Chicago (17ú heag.)Terpstra, Vern. International Marketing. 8th. Texas: Harcourt, 2001.
Lua MLA (9ú heag.)Terpstra, Vern. International Marketing. 8th. Harcourt, 2001.
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