APA (7th ed.) Citation

Steel Construction Institute (Great Britain), Dowling, Knowles, & Owens. (1988). Structural steel design. Butterworths.

Chicago Style (17th ed.) Citation

Steel Construction Institute (Great Britain), Dowling, Knowles, and Owens. Structural Steel Design. London Boston: Butterworths, 1988.

MLA (8th ed.) Citation

Steel Construction Institute (Great Britain), et al. Structural Steel Design. Butterworths, 1988.