Gaya APA
Hardiyatmo, H, C.
(2019).
Mekanika Tanah 1
(
ed. 7, cet. . 3)
.
Yogyakarta:
UGM Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika Tanah 1".
ed. 7, cet. . 3
Yogyakarta:
UGM Press,
2019.
Text.