Das Braja M., S. (2019). Principles of Geotechnical Engineering (9th.). Cengage Publication.
Lua i Stíl Chicago (17ú heag.)Das Braja M., Sobham. Principles of Geotechnical Engineering. 9th. New Delhi: Cengage Publication, 2019.
Lua MLA (9ú heag.)Das Braja M., Sobham. Principles of Geotechnical Engineering. 9th. Cengage Publication, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.