Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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