APA-ийн эшлэл(7 дахь хэвлэлт)

Singh, B., & Goel, R. K. (2011). Engineering rock mass classification: Tunnelling, foundations, and landslides. Butterworth-Heinemann.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Singh, Bhawani, ба R. K. Goel. Engineering Rock Mass Classification: Tunnelling, Foundations, and Landslides. Burlington, Mass.: Butterworth-Heinemann, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Singh, Bhawani, ба R. K. Goel. Engineering Rock Mass Classification: Tunnelling, Foundations, and Landslides. Butterworth-Heinemann, 2011.