Gw mau tau Lihat juga dari Ganding Tusi. Jelasin dalam bahasa melayu

Di Bono, Mario. "Copernicus, Amico, Fracastoro and Tusi's Device: Observations on the Use and Transmission of a Model." Journal for the History of Astronomy 26 (1995):133-154.

Kennedy, E. S. "Late Medieval Planetary Theory." Isis 57 (1966):365-378.

Kren, Claudia.  "The Rolling Device of Naṣir al-Dīn al-Ṭūsī in the De spera of Nicole Oresme." Isis 62 (1971): 490-498.

Ragep, F. J. "The Two Versions of the Tusi Couple," in From Deferent to Equant: A Volume of Studies in the History of Science in Ancient and Medieval Near East in Honor of E. S. Kennedy, ed. David King and George Saliba, Annals of the New York Academy of Sciences, 500. New York Academy of Sciences, 1987.  ISBN 0-89766-396-9 (pbk.)

Ragep, F. J. Nasir al-Din al-Tusi's "Memoir on Astronomy," Sources in the History of Mathematics and Physical Sciences,12. 2 vols. Berlin/New York: Springer, 1993.  ISBN 3-540-94051-0 / ISBN 0-387-94051-0.