Gaya APA

Hardiyatmo, H, C. (2006). Mekanika tanah 1 (Ed. 4). Yogyakarta: Gajah Mada University Press.

Gaya MLA

Hardiyatmo, Hary, Christtady. "Mekanika tanah 1". Ed. 4 Yogyakarta: Gajah Mada University Press, 2006. Text.