Gaya APA
WILEY&SONS.INC, J.
(1967).
ROCK MECHANICS AND THE DESIGN OF STRUCTURES IN ROCK
.
London:
OBERT DUVALL.
Gaya MLA
WILEY&SONS.INC, JOHN.
"ROCK MECHANICS AND THE DESIGN OF STRUCTURES IN ROCK".
London:
OBERT DUVALL,
1967.
Text.