Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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