Gaya APA
Punmia, D, B. et al
(2018).
Soil Mechanics And Foundations
(
17th ed.)
.
Yogyakarta:
Andi.
Gaya MLA
Punmia, Dr., B.C.. et al.
"Soil Mechanics And Foundations".
17th ed.
Yogyakarta:
Andi,
2018.
Text.