Punima B.C. (1985). Soil Meachanics & Foundations. Standarad.
Dyfyniad Arddull ChicagoPunima B.C. Soil Meachanics & Foundations. Delhi: Standarad, 1985.
Dyfyniad MLAPunima B.C. Soil Meachanics & Foundations. Standarad, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.