APA (7th ed.) Zitazioa

Hopf, L. (1948). Introduction to the differential equations of physics. Dover.

Chicago Style (17th ed.) Zitazioa

Hopf, L. Introduction to the Differential Equations of Physics. Nueva York: Dover, 1948.

MLA (9th ed.) Zitazioa

Hopf, L. Introduction to the Differential Equations of Physics. Dover, 1948.