Citazione Stile APA (7a Edizione)

Singh, B., & Goel, R. K. (2011). Engineering rock mass classification: Tunneling, foundations, and landslides. Butterworth-Heinemann. https://doi.org/10.1016/C2010-0-64994-7

Citazione stile Chigago Style (17a edizione)

Singh, Bhawani, e R. K. Goel. Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides. Waltham, MA: Butterworth-Heinemann, 2011. https://doi.org/10.1016/C2010-0-64994-7.

Citatione MLA (9a ed.)

Singh, Bhawani, e R. K. Goel. Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides. Butterworth-Heinemann, 2011. https://doi.org/10.1016/C2010-0-64994-7.