Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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