Ungar, A. A. (2008). Analytic hyperbolic geometry and Albert Einstein's special theory of relativity. World Scientific.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUngar, Abraham A. Analytic Hyperbolic Geometry and Albert Einstein's Special Theory of Relativity. Singapore ; Hackensack, NJ: World Scientific, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUngar, Abraham A. Analytic Hyperbolic Geometry and Albert Einstein's Special Theory of Relativity. World Scientific, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.