Cita APA

Hopf, L., & Nef, W. 1. (1948). Introduction to the differential equations of physics. New York: Dover.

Citación estilo Chicago

Hopf, L., y Walter 1919- Nef. Introduction to the Differential Equations of Physics. New York: Dover, 1948.

Cita MLA

Hopf, L., y Walter 1919- Nef. Introduction to the Differential Equations of Physics. New York: Dover, 1948.