Gaya APA
Hardiyatmo, H, C.
(2010).
MEKANIKA TANAH 2
.
Yogyakarta:
Gajah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"MEKANIKA TANAH 2".
Yogyakarta:
Gajah Mada University Press,
2010.
Buku.