Παραπομπή APA

Varghese, P. (2012). Engineering geology for civil engineers. PHI Learning.

Παραπομπή Chicago Style

Varghese, P.C. Engineering Geology for Civil Engineers. New Delhi: PHI Learning, 2012.

Παραπομπή MLA

Varghese, P.C. Engineering Geology for Civil Engineers. PHI Learning, 2012.