Gaya APA
Punmia, B. et al
(2019).
Soil mechanics and foundations
(
17 th ed.)
.
Yogyakarta:
Andi Offset.
Gaya MLA
Punmia, B.C.. et al.
"Soil mechanics and foundations".
17 th ed.
Yogyakarta:
Andi Offset,
2019.
Text.