(1986). Scheduling Construction Projects/edward M.willis. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Scheduling Construction Projects/edward M.willis. John Wiley & Sons, 1986.
Lua MLA (8ú heag.)Scheduling Construction Projects/edward M.willis. John Wiley & Sons, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.