APA (7th ed.) Citation

Payne, L. E. (1975). Improperly posed problems in partial differential equations. Soc. for Industrial and Applied Mathematics.

Chicago Style (17th ed.) Citation

Payne, Lawrence E. Improperly Posed Problems in Partial Differential Equations. Philadelphia, Pa: Soc. for Industrial and Applied Mathematics, 1975.

MLA (9th ed.) Citation

Payne, Lawrence E. Improperly Posed Problems in Partial Differential Equations. Soc. for Industrial and Applied Mathematics, 1975.