IFIP Working Conference on Symbol Manipulation Language, Pisa, 1966, & Bobrow, D. G. (1968). Symbol manipulation languages and techniques: Proceedings of the IFIP Working Conference on Symbol Manipulation Languages. North-Holland Publishing Company.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)IFIP Working Conference on Symbol Manipulation Language, Pisa, 1966, và Daniel G. Bobrow. Symbol Manipulation Languages and Techniques: Proceedings of the IFIP Working Conference on Symbol Manipulation Languages. Armsterdam: North-Holland Publishing Company, 1968.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)IFIP Working Conference on Symbol Manipulation Language, Pisa, 1966, và Daniel G. Bobrow. Symbol Manipulation Languages and Techniques: Proceedings of the IFIP Working Conference on Symbol Manipulation Languages. North-Holland Publishing Company, 1968.