APA-referens (7:e uppl.)

VARGHESE, P. (2012). ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. PHI.

Chicago-referens (17:e uppl.)

VARGHESE, P.C. ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. N DELHI: PHI, 2012.

MLA-referens (9:e uppl.)

VARGHESE, P.C. ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. PHI, 2012.