Gaya APA
Etbrown, . (1968).
Rock Characterization Testing and Monitoring: IRM Sauggested Methods (1).
London, England:
pergamon press.
Gaya MLA
Etbrown, .
"Rock Characterization Testing and Monitoring: IRM Sauggested Methods".
1
London, England:
pergamon press,
1968.
Text.