APA (7th ed.) Citation

Gregory, E. N., & Armstrong, A. A. (2005). Welding symbols on drawings. CRC Press Woodhead.

Chicago Style (17th ed.) Citation

Gregory, E. N., and A. A. Armstrong. Welding Symbols on Drawings. Boca Raton, FL Cambridge, England: CRC Press Woodhead, 2005.

MLA (9th ed.) Citation

Gregory, E. N., and A. A. Armstrong. Welding Symbols on Drawings. CRC Press Woodhead, 2005.