Gaya APA
Langefors, U., Kihlstrom, B.
(1978).
The modern technique of rock blasting.
(
1978)
.
:
Stockholm, Awe/Gebers,.
Gaya MLA
Langefors, U.., Kihlstrom, B..
"The modern technique of rock blasting.".
1978
:
Stockholm, Awe/Gebers,,
1978.
Text.