Harris, F., & Harris, F. (1991). Management Of Construction Equipment Frank Harris And Ronald Mccaffar. Macmillan.
Lua i Stíl Chicago (17ú heag.)Harris, Frank, agus Frank Harris. Management Of Construction Equipment Frank Harris And Ronald Mccaffar. Macmillan, 1991.
Lua MLA (8ú heag.)Harris, Frank, agus Frank Harris. Management Of Construction Equipment Frank Harris And Ronald Mccaffar. Macmillan, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.