APA (7th ed.) Citation

Willis, A. J., & Willis, C. J. (1968). Specification writing for architects and surveyors (5th ed.). Lockwood.

Chicago Style (17th ed.) Citation

Willis, Arthur James, and Christopher James Willis. Specification Writing for Architects and Surveyors. 5th ed. London: Lockwood, 1968.

MLA (9th ed.) Citation

Willis, Arthur James, and Christopher James Willis. Specification Writing for Architects and Surveyors. 5th ed. Lockwood, 1968.