Gaya APA
Hardiyatmo, H, C., Press, T, U. (2018).
mekanika tanah 2 (Ed.6;cet.1).
Yogyakarta:
Gadjah Mada Universty Pess.
Gaya MLA
Hardiyatmo, Hary, Christady., Press, TIM, UGM.
"mekanika tanah 2".
Ed.6;cet.1
Yogyakarta:
Gadjah Mada Universty Pess,
2018.
Text.