Gaya APA

HARDIYATMO, H, C. (2019). MEKANIKA TANAH 2 (ED. 6). YOGYAKARTA: UGM PRESS.

Gaya MLA

HARDIYATMO, HARY, CHRISTADY. "MEKANIKA TANAH 2". ED. 6 YOGYAKARTA: UGM PRESS, 2019. Text.