APA استشهاد

Bowles, J. E. (1981). Structural steel design. Mc Graw - Hill.

استشهاد بنمط شيكاغو

Bowles, Joseph E. Structural Steel Design. New Delhi: Mc Graw - Hill, 1981.

MLA استشهاد

Bowles, Joseph E. Structural Steel Design. Mc Graw - Hill, 1981.