Gaya APA
Hardiyatmo, H, C.
(2018).
Mekanika Tanah 2
(
Edisi Keenam)
.
Yogyakarta:
UGM Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika Tanah 2".
Edisi Keenam
Yogyakarta:
UGM Press,
2018.
Text.