APA-referens (7:e uppl.)
Singh Alam. Soil engineering in theory and practise: Volume 1 fundamentals and general principles (4th ed.). CBS Pblisher.
Chicago-referens (17:e uppl.)
Singh Alam. Soil Engineering in Theory and Practise: Volume 1 Fundamentals and General Principles. 4th ed. New Delhi: CBS Pblisher.
MLA-referens (9:e uppl.)
Singh Alam. Soil Engineering in Theory and Practise: Volume 1 Fundamentals and General Principles. 4th ed. CBS Pblisher.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.