United Nations Development Fund for Women. (1987). Oil extraction. UNIFEM with the collaboration of the Intermediate Technology Development Group.
Chicago Style aipamenaUnited Nations Development Fund for Women. Oil Extraction. New York: UNIFEM with the collaboration of the Intermediate Technology Development Group, 1987.
MLA aipamenaUnited Nations Development Fund for Women. Oil Extraction. UNIFEM with the collaboration of the Intermediate Technology Development Group, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.