Gaya APA

Hardiyatmo, H, C. (2018). Mekanika tanah 1 (Ed. 7, Cet. 2). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Hardiyatmo, Hary, Christady. "Mekanika tanah 1". Ed. 7, Cet. 2 Yogyakarta: Gadjah Mada University Press, 2018. Text.