APA (7th ed.) Citation

Bentley, J. L., & Kernighan, B. W. (1984). GRAP, a language for typesetting graphs: Tutorial and user manual. AT & T Bell Laboratories.

Chicago Style (17th ed.) Citation

Bentley, Jon Louis, and Brian W. Kernighan. GRAP, a Language for Typesetting Graphs: Tutorial and User Manual. Murray Hill, New Jersey: AT & T Bell Laboratories, 1984.

MLA (9th ed.) Citation

Bentley, Jon Louis, and Brian W. Kernighan. GRAP, a Language for Typesetting Graphs: Tutorial and User Manual. AT & T Bell Laboratories, 1984.