Gaya APA
Hardiyatmo, H, C.
(2007).
Mekanika Tanah II
(
IV)
.
Yogyakarta:
Gajah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika Tanah II".
IV
Yogyakarta:
Gajah Mada University Press,
2007.
Text.