Frank, A. (2011). About time: Cosmology and culture at the twilight of the big bang (1st Free Press hardcover ed.). Free Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrank, Adam. About Time: Cosmology and Culture at the Twilight of the Big Bang. 1st Free Press hardcover ed. New York: Free Press, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrank, Adam. About Time: Cosmology and Culture at the Twilight of the Big Bang. 1st Free Press hardcover ed. Free Press, 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.