NAVFAC. (1974). Design manual: Soil mechanics, foundations, and earth structures. Tabor Evenue.
Lua i Stíl Chicago (17ú heag.)NAVFAC. Design Manual: Soil Mechanics, Foundations, and Earth Structures. Tabor Evenue, 1974.
Lua MLA (8ú heag.)NAVFAC. Design Manual: Soil Mechanics, Foundations, and Earth Structures. Tabor Evenue, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.