APA (7th ed.) Citation

Carasso, A., Stone, A. P., & John, F. (1975). Improperly posed boundary value problems. Pitman.

Chicago Style (17th ed.) Citation

Carasso, Alfred, Alex P. Stone, and Fritz John. Improperly Posed Boundary Value Problems. London ; San Francisco: Pitman, 1975.

MLA (9th ed.) Citation

Carasso, Alfred, et al. Improperly Posed Boundary Value Problems. Pitman, 1975.