Gaya APA

Hardiyatmo, H, C. (2002). Mekanika tanah 1 (3). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Hardiyatmo, Hary, Christady. "Mekanika tanah 1". 3 Yogyakarta: Gadjah Mada University Press, 2002. Text.