Hafiz, M. A. A. (1950). Strength characteristics of sands and gravels in direct shear. University of London.
Lua i Stíl Chicago (17ú heag.)Hafiz, M. A. A. Strength Characteristics of Sands and Gravels in Direct Shear. University of London, 1950.
Lua MLA (8ú heag.)Hafiz, M. A. A. Strength Characteristics of Sands and Gravels in Direct Shear. University of London, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.