Gaya APA
Hardiyatmo, H, C.
(2012).
Mekanika Tanah I
(
6)
.
Yogyakarta:
Gajah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika Tanah I".
6
Yogyakarta:
Gajah Mada University Press,
2012.
Buku.