Παραπομπή σε μορφή APA (7η εκδ.)

Levi, M. (1981). Qualitive Analysis of the Periodically Forced Relaxxtion Oscillations. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Levi, Mark. Qualitive Analysis of the Periodically Forced Relaxxtion Oscillations. Rhode island: American Mathematical Society, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

Levi, Mark. Qualitive Analysis of the Periodically Forced Relaxxtion Oscillations. American Mathematical Society, 1981.