Cooper, M. A. R. (1987). Control surveys in civil engineering. Collins.
Lua i Stíl Chicago (17ú heag.)Cooper, Michael Alan Ralph. Control Surveys in Civil Engineering. London: Collins, 1987.
Lua MLA (9ú heag.)Cooper, Michael Alan Ralph. Control Surveys in Civil Engineering. Collins, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.