MacCallum, I. (1983). Pascal for the apple. Prentice-Hall International.
Lua i Stíl Chicago (17ú heag.)MacCallum, Iain. Pascal for the Apple. Englewood Cliffs, N.J: Prentice-Hall International, 1983.
Lua MLA (9ú heag.)MacCallum, Iain. Pascal for the Apple. Prentice-Hall International, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.