Παραπομπή σε μορφή APA (7η εκδ.)

Lemons, D. S. (1997). Perfect form: Variational principles, methods and applications in elementary physics. Princeton University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lemons, Don S. Perfect Form: Variational Principles, Methods and Applications in Elementary Physics. Princeton, N.J.: Princeton University Press, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lemons, Don S. Perfect Form: Variational Principles, Methods and Applications in Elementary Physics. Princeton University Press, 1997.