Gaya APA
Wyllie, D, C., Mah, C, W.
(2004).
ROCK SLOPE ENGINEERING: Civil and Mining
(
4th edition)
.
:
Spon Press.
Gaya MLA
Wyllie, Duncan, C.., Mah, Christopher, W..
"ROCK SLOPE ENGINEERING: Civil and Mining".
4th edition
:
Spon Press,
2004.
Text.