Gaya APA

Hardiyatmo, H, C. (2012). Mekanika Tanah I (VII). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Hardiyatmo, Hary, Christady. "Mekanika Tanah I". VII Yogyakarta: Gadjah Mada University Press, 2012. Text.