Frede. Doubt, Atheism, and the Nineteenth-Century Russian Intelligentsia. University of Wisconsin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrede. Doubt, Atheism, and the Nineteenth-Century Russian Intelligentsia. University of Wisconsin Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrede. Doubt, Atheism, and the Nineteenth-Century Russian Intelligentsia. University of Wisconsin Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.