Gaya APA
HARDIYATMO, H, C.
(2010).
Mekanika Tanah 2
(
1)
.
Yogyakarta:
UGM.
Gaya MLA
HARDIYATMO, HARY, CHRISTADY.
"Mekanika Tanah 2".
1
Yogyakarta:
UGM,
2010.
Text.