Gaya APA
Hardiyatmo, H, C. (2019).
Mekanika tanah 2 : edisi keenam (cetakan 2).
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika tanah 2 : edisi keenam".
cetakan 2
Yogyakarta:
Gadjah Mada University Press,
2019.
Teks.