Haik, Y., & Kilani, M. (2002). Essentials of Pro/ENGINEER. Brooks/Cole.
Lua i Stíl Chicago (17ú heag.)Haik, Yousef, agus Mohammed Kilani. Essentials of Pro/ENGINEER. Australia: Brooks/Cole, 2002.
Lua MLA (9ú heag.)Haik, Yousef, agus Mohammed Kilani. Essentials of Pro/ENGINEER. Brooks/Cole, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.