Feuer, A. R. (1989). The C puzzle book (2nd ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Feuer, Alan R. The C Puzzle Book. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1989.
Lua MLA (9ú heag.)Feuer, Alan R. The C Puzzle Book. 2nd ed. Prentice Hall, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.