Lua APA (7ú heag.)
Singh, P. (2004). A Textbook of engineering and general geology (7th ed.). S. K. Kataria Pub.
Lua i Stíl Chicago (17ú heag.)
Singh, Parbin. A Textbook of Engineering and General Geology. 7th ed. Delhi: S. K. Kataria Pub, 2004.
Lua MLA (9ú heag.)
Singh, Parbin. A Textbook of Engineering and General Geology. 7th ed. S. K. Kataria Pub, 2004.
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