Schofield, W., & Breach, M. (2007). Engineering surveying (6th ed.). Elsevier.
Lua i Stíl Chicago (17ú heag.)Schofield, W., agus M. Breach. Engineering Surveying. 6th ed. Amsterdam: Elsevier, 2007.
Lua MLA (9ú heag.)Schofield, W., agus M. Breach. Engineering Surveying. 6th ed. Elsevier, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.