Gaya APA
Hardiyatmo, H, C.
(2010).
Mekanika tanah 1
(
Ed. 5)
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika tanah 1".
Ed. 5
Yogyakarta:
Gadjah Mada University Press,
2010.
Text.