Willis, C. J., & Willis, J. A. (1997). Specification writing for architects and surveyors / Christopher J. Willis and J. Andrew Willis (11th ed.). Blackwell Science.
Chicago Style (17th ed.) CitationWillis, Christopher J., and J. Andrew Willis. Specification Writing for Architects and Surveyors / Christopher J. Willis and J. Andrew Willis. 11th ed. Oxford: Blackwell Science, 1997.
MLA (9th ed.) CitationWillis, Christopher J., and J. Andrew Willis. Specification Writing for Architects and Surveyors / Christopher J. Willis and J. Andrew Willis. 11th ed. Blackwell Science, 1997.
Warning: These citations may not always be 100% accurate.