Cita APA

Landis, E. M. (1998). Second order equations of elliptic and parabolic type. Providence, Rhode Island: American Mathematical Society.

Citación estilo Chicago

Landis, E. M. Second Order Equations of Elliptic and Parabolic Type. Providence, Rhode Island: American Mathematical Society, 1998.

Cita MLA

Landis, E. M. Second Order Equations of Elliptic and Parabolic Type. Providence, Rhode Island: American Mathematical Society, 1998.