APA (7th ed.) Citation

Clements, D. L. (1981). Boundary value problems governed by second order elliptic systems. Pitman Advanced Pub. Program.

Chicago Style (17th ed.) Citation

Clements, David L. Boundary Value Problems Governed by Second Order Elliptic Systems. Boston: Pitman Advanced Pub. Program, 1981.

MLA (9th ed.) Citation

Clements, David L. Boundary Value Problems Governed by Second Order Elliptic Systems. Pitman Advanced Pub. Program, 1981.