Allenby, R. B. J. T., & Slomson, A. B. (2011). How to count: An introduction to combinatorics (2nd ed.). CRC Press.
Lua i Stíl Chicago (17ú heag.)Allenby, R. B. J. T., agus A. B. Slomson. How to Count: An Introduction to Combinatorics. 2nd ed. Boca Raton, Fla: CRC Press, 2011.
Lua MLA (9ú heag.)Allenby, R. B. J. T., agus A. B. Slomson. How to Count: An Introduction to Combinatorics. 2nd ed. CRC Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.