Lua APA (7ú heag.)

SINGH PARBIN. (2013). ENGINEERING AND GENERAL GEOLOGY (8TH ED.). S K KATARIA AND SONS.

Lua i Stíl Chicago (17ú heag.)

SINGH PARBIN. ENGINEERING AND GENERAL GEOLOGY. 8TH ED. NEW DELHI: S K KATARIA AND SONS, 2013.

Lua MLA (9ú heag.)

SINGH PARBIN. ENGINEERING AND GENERAL GEOLOGY. 8TH ED. S K KATARIA AND SONS, 2013.

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