Cita APA (7th ed.)
Das, B. M., & Sobahan, K. (2018). Principles of Geotechnical Engineering (9th ed.). Cengage Learning.
Cita Chicago (17th ed.)
Das, Braja M., i Khaled Sobahan. Principles of Geotechnical Engineering. 9th ed. New Delhi: Cengage Learning, 2018.
Cita MLA (9th ed.)
Das, Braja M., i Khaled Sobahan. Principles of Geotechnical Engineering. 9th ed. Cengage Learning, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.