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.

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. Englewood Cliffs, N.J.: Prentice Hall, 1989.

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.