APA Style

Das, Braja M., Sobhan, Khaled. (2017). Principles of Geotechnical Engineering (Ed. 9th). Massachusetts: Cengage Learning.

Chicago Style

Das, Braja M., Sobhan, Khaled. Principles of Geotechnical Engineering. Ed. 9th Massachusetts: Cengage Learning, 2017. Text.

MLA Style

Das, Braja M., Sobhan, Khaled. Principles of Geotechnical Engineering. Ed. 9th Massachusetts: Cengage Learning, 2017. Text.

Turabian Style

Das, Braja M., Sobhan, Khaled. Principles of Geotechnical Engineering. Ed. 9th Massachusetts: Cengage Learning, 2017. Print.