APA (7th ed.) Citation

Pike, R., & Kernighan, B. W. (1984). The UNIX Programming Environment. Prentice-Hall.

Chicago Style (17th ed.) Citation

Pike, Rob, and Brian W. Kernighan. The UNIX Programming Environment. Englewood Cliffs N.J: Prentice-Hall, 1984.

MLA (8th ed.) Citation

Pike, Rob, and Brian W. Kernighan. The UNIX Programming Environment. Prentice-Hall, 1984.