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.