Gaya APA
PETEX., . (1979).
Workbook for a primer of oilwell service and workover. (1979).
:
Texas: Petroleum Extension Service, PETEX ,.
Gaya MLA
PETEX., .
"Workbook for a primer of oilwell service and workover.".
1979
:
Texas: Petroleum Extension Service, PETEX ,,
1979.
Text.