APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.