Kalay, Y. E. (1987). Graphic introduction to programming. Wiley.
Lua i Stíl Chicago (17ú heag.)Kalay, Yehuda E. Graphic Introduction to Programming. New York: Wiley, 1987.
Lua MLA (9ú heag.)Kalay, Yehuda E. Graphic Introduction to Programming. Wiley, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.