Zimmerer, T., & Scarborough, N. M. (2005). Essentials of entrepreneurship and small business management (4th ed.). Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Zimmerer, Thomas, agus Norman M. Scarborough. Essentials of Entrepreneurship and Small Business Management. 4th ed. Upper Saddle River, NJ ; New Delhi: Pearson/Prentice Hall, 2005.
Lua MLA (8ú heag.)Zimmerer, Thomas, agus Norman M. Scarborough. Essentials of Entrepreneurship and Small Business Management. 4th ed. Pearson/Prentice Hall, 2005.
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