Schwartzman, Steven. The Words of Mathematics: An Etymological Dictionary of Mathematical Terms Used in English, p. 142. The Mathematical Assoc. of America, 1994.
Janowitz, Naomi. The Poetics of Ascent: Theories of Language in a Rabbinic Ascent Text, p. 118. SUNY Press (New York), 1989. Accessed 1 November 2013.
Wai Keung Chan, Timothy. Considering the End: Mortality in Early Medieval Chinese Poetic Representation, 23. Brill, 2012. Accessed 1 November 2013.
Chen Derong. Metaphorical Metaphysics in Chinese Philosophy, p. 29. Lexington Books (Lanham, MD), 2011. Accessed 1 November 2013.
Yeh Wen-hsin & al. Visualizing China, 1845–1965: Moving and Still Images in Historical Narratives, pp. 416 ff. Brill, 2012. Accessed 1 November 2013.
