Groysberg, B. &. S. (2012). Talk, Inc. Harvard Business School Publishing.
Lua i Stíl Chicago (17ú heag.)Groysberg, Boris & Slind. Talk, Inc. United State of America: Harvard Business School Publishing, 2012.
Lua MLA (9ú heag.)Groysberg, Boris & Slind. Talk, Inc. Harvard Business School Publishing, 2012.
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