Burger-Helmchen, T. (2012). Entrepreneurship: Born, Made and Educated. IntechOpen.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBurger-Helmchen, Thierry. Entrepreneurship: Born, Made and Educated. IntechOpen, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBurger-Helmchen, Thierry. Entrepreneurship: Born, Made and Educated. IntechOpen, 2012.
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