Cooper, G. H. (1945). Building construction estimating. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Cooper, George Henderson. Building Construction Estimating. New York: McGraw-Hill, 1945.
Lua MLA (9ú heag.)Cooper, George Henderson. Building Construction Estimating. McGraw-Hill, 1945.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.