APA (7th ed.) Citation
Tondo, C. L., Gimpel, S. E., & Kernighan, B. W. (1989). The C answer book: Solutions to the exercises in The C programming language, second edition, by Brian W. Kernighan and Dennis M. Ritchie (2nd ed.). Prentice Hall.
Chicago Style (17th ed.) Citation
Tondo, Clovis L., Scott E. Gimpel, and Brian W. Kernighan. The C Answer Book: Solutions to the Exercises in The C Programming Language, Second Edition, by Brian W. Kernighan and Dennis M. Ritchie. 2nd ed. NewDelhi : Englewood Cliffs, N.J.: Prentice Hall, 1989.
MLA (9th ed.) Citation
Tondo, Clovis L., et al. The C Answer Book: Solutions to the Exercises in The C Programming Language, Second Edition, by Brian W. Kernighan and Dennis M. Ritchie. 2nd ed. Prentice Hall, 1989.
Warning: These citations may not always be 100% accurate.