Gaya APA

HARDIYATMO, H, C. (2012). MEKANIKA TANAH 1 . YOGYAKARTA: GADAH MADA UNIVERSITY PRESS.

Gaya MLA

HARDIYATMO, HARY, CHRISTADY. "MEKANIKA TANAH 1". YOGYAKARTA: GADAH MADA UNIVERSITY PRESS, 2012. Text.