APA
The Organization of Arab petroleum Exporting countries, . (1980). Secretary genral's sixth Annual report 1399 H - 1979 AD. Kuwait: OAPEC.
Chicago
The Organization of Arab petroleum Exporting countries, . 1980. Secretary genral's sixth Annual report 1399 H - 1979 AD. Kuwait: OAPEC.
Harvard
The Organization of Arab petroleum Exporting countries, . (1980). Secretary genral's sixth Annual report 1399 H - 1979 AD. Kuwait: OAPEC.
MLA
The Organization of Arab petroleum Exporting countries, . Secretary genral's sixth Annual report 1399 H - 1979 AD. Kuwait: OAPEC. 1980.
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