Cateora, P. R., & Graham, J. L. (2008). International Marketing. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Cateora, Philip R., agus John L. Graham. International Marketing. McGraw Hill, 2008.
Lua MLA (8ú heag.)Cateora, Philip R., agus John L. Graham. International Marketing. McGraw Hill, 2008.
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