Hafiz, M. A. A. (1950). Strength characteristics of sands and gravels in direct shear. University of London.
Chicago (17e ed.) BronvermeldingHafiz, M. A. A. Strength Characteristics of Sands and Gravels in Direct Shear. University of London, 1950.
MLA (8e ed.) BronvermeldingHafiz, M. A. A. Strength Characteristics of Sands and Gravels in Direct Shear. University of London, 1950.
Let op: Deze citaties zijn niet altijd 100% accuraat.