HEITKAMP, J. H. Process plant construction estimating standars: Siteworkk, piling, concrete. Volume I. Richardson Engineering Sevice.
Lua i Stíl Chicago (17ú heag.)HEITKAMP, John H. Process Plant Construction Estimating Standars: Siteworkk, Piling, Concrete. Volume I. Richardson Engineering Sevice.
Lua MLA (8ú heag.)HEITKAMP, John H. Process Plant Construction Estimating Standars: Siteworkk, Piling, Concrete. Volume I. Richardson Engineering Sevice.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.