Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.