Gaya APA
Hardiyatmo, H, C.
(2019).
Mekanika tanah 1
(
Ed. 7. cet. 3)
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Hardiyatmo, Hary, Christady.
"Mekanika tanah 1".
Ed. 7. cet. 3
Yogyakarta:
Gadjah Mada University Press,
2019.
Text.