Metcalf. Philosophy as Agôn. Northwestern University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMetcalf. Philosophy as Agôn. Northwestern University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMetcalf. Philosophy as Agôn. Northwestern University Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.