एपीए उद्धरण

Hopf, L. (1948). Differential Equations of Physics. Dover Publications.

शिकागो स्टाइल उद्धरण

Hopf, L. Differential Equations of Physics. New York: Dover Publications, 1948.

एमएलए उद्धरण

Hopf, L. Differential Equations of Physics. Dover Publications, 1948.