Gerber, M. E. (2010). The Most Successful Small Business In The World (sco.). Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Gerber, Michael E. The Most Successful Small Business In The World. sco. San Franci: Jossey-Bass, 2010.
Lua MLA (9ú heag.)Gerber, Michael E. The Most Successful Small Business In The World. sco. Jossey-Bass, 2010.
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