APA (7e ed.) Bronvermelding

Van Brummelen, G. (2013). Heavenly mathematics: The forgotten art of spherical trigonometry. Princeton University Press.

Chicago (17e ed.) Bronvermelding

Van Brummelen, Glen. Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry. Princeton: Princeton University Press, 2013.

MLA (9e ed.) Bronvermelding

Van Brummelen, Glen. Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry. Princeton University Press, 2013.