APA (7th ed.) Citation

Brebbia, C. A., & Walker, S. (1980). Boundary element techniques in engineering. Newnes-Butterworths.

Chicago Style (17th ed.) Citation

Brebbia, C. A., and Stephen Walker. Boundary Element Techniques in Engineering. Londres: Newnes-Butterworths, 1980.

MLA (9th ed.) Citation

Brebbia, C. A., and Stephen Walker. Boundary Element Techniques in Engineering. Newnes-Butterworths, 1980.