Gaya APA
Hardiyatmo, H, C.
(2012).
Mekanika Tanah 1 Edisi Keenam
.
YOGYAKARTA:
UGM Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika Tanah 1 Edisi Keenam".
YOGYAKARTA:
UGM Press,
2012.
Text.