Van Brummelen, G. (2017). Heavenly mathematics: The forgotten art of spherical trigonometry (First paperback printing.). Princeton University Press.
Chicago-Zitierstil (17. Ausg.)Van Brummelen, Glen. Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry. First paperback printing. Princeton: Princeton University Press, 2017.
MLA-Zitierstil (9. Ausg.)Van Brummelen, Glen. Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry. First paperback printing. Princeton University Press, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.