APA (7 वां संस्करण) प्रशस्ति पत्र
Krcal, O. (2014). An explanation of the inverted-U relationship between profitability and innovation. Masaryk University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Krcal, Ondrej. An Explanation of the Inverted-U Relationship Between Profitability and Innovation. Brno, [Czech Republic]: Masaryk University, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Krcal, Ondrej. An Explanation of the Inverted-U Relationship Between Profitability and Innovation. Masaryk University, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.