Gaya APA
Composite Catalog of Oil field equipment and service. (1986).
Texas, USA:
World Oili.
Gaya Chicago
Composite Catalog of Oil field equipment and service.
vol.3.
Texas, USA:
World Oili,
1986.
.
Gaya MLA
Composite Catalog of Oil field equipment and service.
vol.3.
Texas, USA:
World Oili,
1986.
.
Gaya Turabian
Composite Catalog of Oil field equipment and service.
Texas, USA:
World Oili,
1986.
.