Παραπομπή σε μορφή APA (7η εκδ.)

Gray, J. (2011). Worlds out of nothing: A course in the history of geometry in the 19th century. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gray, Jeremy. Worlds Out of Nothing: A Course in the History of Geometry in the 19th Century. London ; New York: Springer, 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gray, Jeremy. Worlds Out of Nothing: A Course in the History of Geometry in the 19th Century. Springer, 2011.