Gaya APA
Vervalin, C, H. (1985).
Fire protection manual for hydrocarbon processing plants volume 2. (1985).
:
Houston : Gulf Publishing Co.,.
Gaya MLA
Vervalin, Charles, H..
"Fire protection manual for hydrocarbon processing plants volume 2.".
1985
:
Houston : Gulf Publishing Co.,,
1985.
Text.