Singh, A. I. (1996). Completely positive hypergroup actions. American Mathematical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Ajit Iqbal. Completely Positive Hypergroup Actions. Providence: American Mathematical Society, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Ajit Iqbal. Completely Positive Hypergroup Actions. American Mathematical Society, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.