(2012). IE Business Cases. Hotel Ipsum: A Marketing and Commerical Strategy to Survive. Instituto de Empresa SL.
Čikaški stil citiranja (17. izdanje)IE Business Cases. Hotel Ipsum: A Marketing and Commerical Strategy to Survive. [S.l.]: Instituto de Empresa SL, 2012.
MLA način citiranja (9. izdanje)IE Business Cases. Hotel Ipsum: A Marketing and Commerical Strategy to Survive. Instituto de Empresa SL, 2012.
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