Gaya APA
Pennwell, .
(2004).
Oil & gas Journal, OG.J200/100, China,s energy
(
Week of Sept 13)
.
Houston:
Pennwell Books.
Gaya MLA
Pennwell, .
"Oil & gas Journal, OG.J200/100, China,s energy".
Week of Sept 13
Houston:
Pennwell Books,
2004.
Jurnal TP.