Koyré (1973, pp. 18–28); Swerdlow (1973, pp. 423–24); Copernicus (1992, pp. 20, 208–52); Rosen (2004, pp. 6–7, 57–90). Koyré, Alexandre (1973). The Astronomical Revolution: Copernicus – Kepler – Borelli. Ithaca, NY: Cornell University Press. ISBN0-8014-0504-1. Swerdlow, Noel M. (December 1973), "The derivation and first draft of Copernicus's planetary theory A translation of the Commentariolus with commentary.", Proceedings of the American Philosophical Society, 117 (6): 423–512 Rosen, Edward (2004) [1939]. Three Copernican Treatises: The Commentariolus of Copernicus; The Letter against Werner; The Narratio Prima of Rheticus (Second Edition, Revised ed.). New York, NY: Dover Publications, Inc.
English translations by Rosen (2004, pp. 57–65). Rosen, Edward (2004) [1939]. Three Copernican Treatises: The Commentariolus of Copernicus; The Letter against Werner; The Narratio Prima of Rheticus (Second Edition, Revised ed.). New York, NY: Dover Publications, Inc.