Gaya APA
Hardiyatmo, H, C.
(1992).
Mekanika Tanah Jl. 2
(
4)
.
Jakarta:
Khanna Publisheers.
Gaya MLA
Hardiyatmo, Hary, Chistady.
"Mekanika Tanah Jl. 2".
4
Jakarta:
Khanna Publisheers,
1992.
Text.