APA (7th ed.) Citation

Simmons, C. H., & Phelps, N. (2009). The essential guide to technical product specification : engineering drawing / Colin Simmons and Neil Phelps: Engineering drawing. BSI.

Chicago Style (17th ed.) Citation

Simmons, C. H., and Neil Phelps. The Essential Guide to Technical Product Specification : Engineering Drawing / Colin Simmons and Neil Phelps: Engineering Drawing. London: BSI, 2009.

MLA (9th ed.) Citation

Simmons, C. H., and Neil Phelps. The Essential Guide to Technical Product Specification : Engineering Drawing / Colin Simmons and Neil Phelps: Engineering Drawing. BSI, 2009.

Warning: These citations may not always be 100% accurate.