Παραπομπή σε μορφή APA (7η εκδ.)

Brackenridge, J. B., & Rossi, M. A. (1996). The key to Newton's dynamics: The Keppler problem and the Principia. University of California Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Brackenridge, J. Bruce, και Mary Ann Rossi. The Key to Newton's Dynamics: The Keppler Problem and the Principia. Berkeley: University of California Press, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

Brackenridge, J. Bruce, και Mary Ann Rossi. The Key to Newton's Dynamics: The Keppler Problem and the Principia. University of California Press, 1996.