Gaya APA
Christady, H, H.
(2007).
Mekanika Tanah 2
.
Yogyakarta:
Gadjah Mada University Prees.
Gaya MLA
Christady, Hardiyatmo, Hary.
"Mekanika Tanah 2".
Yogyakarta:
Gadjah Mada University Prees,
2007.
Text.