Singh, B., & Goel, R. K. (2011). Engineering rock mass classification: Tunneling, foundations, and landslides. Butterworth-Heinemann/Elsevier.
Chicago Style (17th ed.) CitationSingh, Bhawani, and Rakesh K. Goel. Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides. Edinburgh [u.a.]: Butterworth-Heinemann/Elsevier, 2011.
MLA (9th ed.) CitationSingh, Bhawani, and Rakesh K. Goel. Engineering Rock Mass Classification: Tunneling, Foundations, and Landslides. Butterworth-Heinemann/Elsevier, 2011.
Warning: These citations may not always be 100% accurate.