APA (7th ed.) Citation

Knuth, D. E., & Bibby, D. (1986). METAFONT: The program. Addison Wesley.

Chicago Style (17th ed.) Citation

Knuth, Donald Ervin, and Duane Bibby. METAFONT: The Program. Reading, Mass.: Addison Wesley, 1986.

MLA (9th ed.) Citation

Knuth, Donald Ervin, and Duane Bibby. METAFONT: The Program. Addison Wesley, 1986.