Cita APA (7a ed.)

Brett, P., & Rushton, J. (1990). Parallel beam approach: A desing guide. Steel Construction Institute.

Cita Chicago Style (17a ed.)

Brett, P., y James Rushton. Parallel Beam Approach: A Desing Guide. Ascot: Steel Construction Institute, 1990.

Cita MLA (9a ed.)

Brett, P., y James Rushton. Parallel Beam Approach: A Desing Guide. Steel Construction Institute, 1990.