Dyfyniad APA
Singh Alam. Soil engineering in theory and practise: Volume 1 fundamentals and general principles (4th ed.). CBS Pblisher.
Dyfyniad Arddull Chicago
Singh Alam. Soil Engineering in Theory and Practise: Volume 1 Fundamentals and General Principles. 4th ed. New Delhi: CBS Pblisher.
Dyfyniad MLA
Singh Alam. Soil Engineering in Theory and Practise: Volume 1 Fundamentals and General Principles. 4th ed. CBS Pblisher.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.