Dyfyniad APA

Das, B. M., & Sobhan, K. (2014). Principles of geotechnical engineering (8th SI ed.). Cengage.

Dyfyniad Arddull Chicago

Das, Braja M., and Khaled Sobhan. Principles of Geotechnical Engineering. 8th SI ed. Stamford, CT: Cengage, 2014.

Dyfyniad MLA

Das, Braja M., and Khaled Sobhan. Principles of Geotechnical Engineering. 8th SI ed. Cengage, 2014.

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