Gilles, A., & Mondejar, R. (2008). Guide to entrepreneurship (2nd ed.). Sinag-Tala.
Lua i Stíl Chicago (17ú heag.)Gilles, Alexander, agus Reuben Mondejar. Guide to Entrepreneurship. 2nd ed. Manila: Sinag-Tala, 2008.
Lua MLA (9ú heag.)Gilles, Alexander, agus Reuben Mondejar. Guide to Entrepreneurship. 2nd ed. Sinag-Tala, 2008.
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