IRVINE, W. (1995). Surveying For Construction William Irvine. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)IRVINE, William. Surveying For Construction William Irvine. McGraw-Hill, 1995.
Lua MLA (8ú heag.)IRVINE, William. Surveying For Construction William Irvine. McGraw-Hill, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.