APA (7th ed.) Citation

Sommerfeld, A. (1972). Partial differential equations in physics (5. print.). Acad.Pr.

Chicago Style (17th ed.) Citation

Sommerfeld, Arnold. Partial Differential Equations in Physics. 5. print. New York [u.a.]: Acad.Pr, 1972.

MLA (9th ed.) Citation

Sommerfeld, Arnold. Partial Differential Equations in Physics. 5. print. Acad.Pr, 1972.