Osterland, E. A. (2012). Power entertaining: Secrets to building lasting relationships, hosting unforgettable events, and closing big deals from America's 1st master sommelier. Wiley.
Lua i Stíl Chicago (17ú heag.)Osterland, Edmund A. Power Entertaining: Secrets to Building Lasting Relationships, Hosting Unforgettable Events, and Closing Big Deals from America's 1st Master Sommelier. Hoboken, N.J.: Wiley, 2012.
Lua MLA (9ú heag.)Osterland, Edmund A. Power Entertaining: Secrets to Building Lasting Relationships, Hosting Unforgettable Events, and Closing Big Deals from America's 1st Master Sommelier. Wiley, 2012.
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