Butler, S. T. (1963). The universe of time and space: A course of selected lectures in astronomy, cosmology, and physics. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButler, S. T. The Universe of Time and Space: A Course of Selected Lectures in Astronomy, Cosmology, and Physics. Oxford: Macmillan, 1963.
एमएलए (9वां संस्करण) प्रशस्ति पत्रButler, S. T. The Universe of Time and Space: A Course of Selected Lectures in Astronomy, Cosmology, and Physics. Macmillan, 1963.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.