Gaya APA

Hardiyatmo, H, C. (2018). Mekanika tanah 2 (Keenam). Yogakarta: Gadjah Mada University Press.

Gaya MLA

Hardiyatmo, Hary, Christady. "Mekanika tanah 2". Keenam Yogakarta: Gadjah Mada University Press, 2018. Text.