Gaya APA

Hardiyatmo, H, C. (2018). MEKANIKA TANAH 1 . Yogyakarta: GADJAH MADA UIVERSITY RESS.

Gaya MLA

Hardiyatmo, Hary, Christady. "MEKANIKA TANAH 1". Yogyakarta: GADJAH MADA UIVERSITY RESS, 2018. Text.