Cita APA (7a ed.)

Sommerfeld, A. (1949). Partial differential equations in physics. Academic Press.

Cita Chicago Style (17a ed.)

Sommerfeld, Arnold. Partial Differential Equations in Physics. New York: Academic Press, 1949.

Cita MLA (8a ed.)

Sommerfeld, Arnold. Partial Differential Equations in Physics. Academic Press, 1949.