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