Cita APA (7th ed.)

Das, B. M., & Sobhan, K. (2014). Principles of geotechnical engineering (Eighth edition.). Cengage Learning.

Cita Chicago (17th ed.)

Das, Braja M., i Khaled Sobhan. Principles of Geotechnical Engineering. Eighth edition. Stamford, CT: Cengage Learning, 2014.

Cita MLA (9th ed.)

Das, Braja M., i Khaled Sobhan. Principles of Geotechnical Engineering. Eighth edition. Cengage Learning, 2014.