APA (7th ed.) Citation

Ruth, G. R. (1976). Protosystem I: An automatic programming system prototype. Mass. Inst. of Technology, Laboratory for Computer Science.

Chicago Style (17th ed.) Citation

Ruth, Gregory R. Protosystem I: An Automatic Programming System Prototype. Cambridge, Mass: Mass. Inst. of Technology, Laboratory for Computer Science, 1976.

MLA (9th ed.) Citation

Ruth, Gregory R. Protosystem I: An Automatic Programming System Prototype. Mass. Inst. of Technology, Laboratory for Computer Science, 1976.