APA (7th ed.) Citation

Stoy, J. E., & Strachey, C. (1972). OS6, an operating system for a small computer. Oxford University Computing Laboratory, Programming Research Group.

Chicago Style (17th ed.) Citation

Stoy, Joseph E., and Christopher Strachey. OS6, an Operating System for a Small Computer. Oxford (45 Banbury Rd, Oxford): Oxford University Computing Laboratory, Programming Research Group, 1972.

MLA (8th ed.) Citation

Stoy, Joseph E., and Christopher Strachey. OS6, an Operating System for a Small Computer. Oxford University Computing Laboratory, Programming Research Group, 1972.