Gaya APA

hardiyatmo, H, C. (2012). MEKANIK TANAH 1 (ED 6). Yogyakarta: Gadja mada university Press.

Gaya MLA

hardiyatmo, Hary, Christady. "MEKANIK TANAH 1". ED 6 Yogyakarta: Gadja mada university Press, 2012. Text.