Gaya APA
c.lambe, P., A.hansen, L.
(1990).
design and performance of earth retaining structures
(
1)
.
Asce:
New Yok.
Gaya MLA
c.lambe, Philip., A.hansen, Lawrence.
"design and performance of earth retaining structures".
1
Asce:
New Yok,
1990.
Text.