International Machine Tool Design and Research Conference (12th : 1971 : Manchester), Tobias, S. A., & Koenigsberger, F. (1972). Proceedings of the Twelfth International Machine Tool Design and Research Conference: Held Manchester 15-17 September 1971. Macmillan.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)International Machine Tool Design and Research Conference (12th : 1971 : Manchester), Stephen Albert Tobias, và F. Koenigsberger. Proceedings of the Twelfth International Machine Tool Design and Research Conference: Held Manchester 15-17 September 1971. London: Macmillan, 1972.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)International Machine Tool Design and Research Conference (12th : 1971 : Manchester), et al. Proceedings of the Twelfth International Machine Tool Design and Research Conference: Held Manchester 15-17 September 1971. Macmillan, 1972.