Gaya APA
Seymor, Ian. (1981).
Opec instrument of change .
New York, NY:
StMartins Press.
Gaya Chicago
Seymor, Ian.
Opec instrument of change.
New York, NY:
StMartins Press,
1981.
Buku.
Gaya MLA
Seymor, Ian.
Opec instrument of change.
New York, NY:
StMartins Press,
1981.
Buku.
Gaya Turabian
Seymor, Ian.
Opec instrument of change.
New York, NY:
StMartins Press,
1981.
Buku.