Symposium on Concrete Shell Roof Construction London, England, & Witt, P. J. (1954). Proceedings of a symposium on concrete shell roof construction: 2-4 July 1952. Cement and Concrete Association.
Chicago Style (17th ed.) CitationSymposium on Concrete Shell Roof Construction London, England, and P. J. Witt. Proceedings of a Symposium on Concrete Shell Roof Construction: 2-4 July 1952. London: Cement and Concrete Association, 1954.
MLA (9th ed.) CitationSymposium on Concrete Shell Roof Construction London, England, and P. J. Witt. Proceedings of a Symposium on Concrete Shell Roof Construction: 2-4 July 1952. Cement and Concrete Association, 1954.
Warning: These citations may not always be 100% accurate.