APA (7th ed.) Citation

Willis, A. J., & Willis, C. J. (1953). Specification writing for architects and surveyors (4th ed.). Ernet Benn Ltd..

Chicago Style (17th ed.) Citation

Willis, Arthur J., and Christopher J. Willis. Specification Writing for Architects and Surveyors. 4th ed. London: Ernet Benn Ltd., 1953.

MLA (9th ed.) Citation

Willis, Arthur J., and Christopher J. Willis. Specification Writing for Architects and Surveyors. 4th ed. Ernet Benn Ltd., 1953.