Gaya APA

Goel, B, S, A, R, K. (2011). Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides . United of Kingdom: Elsevier Inc.

Gaya MLA

Goel, Bhawani, Singh, And, R., K.. "Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides". United of Kingdom: Elsevier Inc, 2011. Text.