APA aipamena

Shihata, I. (1982). Other Face of OPEC: Financial Assistance to the Third World. Longman.

Chicago Style aipamena

Shihata, Ibrahim.F.I. Other Face of OPEC: Financial Assistance to the Third World. London: Longman, 1982.

MLA aipamena

Shihata, Ibrahim.F.I. Other Face of OPEC: Financial Assistance to the Third World. Longman, 1982.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.