Cita APA (7a ed.)

Ladyzhenskaya, O. A., & Ural'tseva, N. N. (1968). Linear and quasilinear elliptic equations. Academic press.

Cita Chicago Style (17a ed.)

Ladyzhenskaya, Olga A., y Nina N. Ural'tseva. Linear and Quasilinear Elliptic Equations. New York: Academic press, 1968.

Cita MLA (9a ed.)

Ladyzhenskaya, Olga A., y Nina N. Ural'tseva. Linear and Quasilinear Elliptic Equations. Academic press, 1968.