APA (7th ed.) Citation

Knuth, D. E. (2012). TEX: The program (9. print., incorporates all corrections known in 2011.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Knuth, Donald Ervin. TEX: The Program. 9. print., incorporates all corrections known in 2011. Upper Saddle River [u.a.]: Addison-Wesley, 2012.

MLA (9th ed.) Citation

Knuth, Donald Ervin. TEX: The Program. 9. print., incorporates all corrections known in 2011. Addison-Wesley, 2012.