APA (7th ed.) Citation

Wulf, W. A., Levin, R., & Harbison, S. P. (1981). HYDRA/C.mmp: An experimental computer system. McGraw-Hill.

Chicago Style (17th ed.) Citation

Wulf, William A., Roy Levin, and Samuel P. Harbison. HYDRA/C.mmp: An Experimental Computer System. New York u.a: McGraw-Hill, 1981.

MLA (9th ed.) Citation

Wulf, William A., et al. HYDRA/C.mmp: An Experimental Computer System. McGraw-Hill, 1981.