Organisation of Islamic Conference & Statistical, Economic, and Social Research and Training Centre for Islamic Countries. (1989). Yearbook of socio-economic indicators of the OIC member countries. Statistical, Economic, and Social Research and Training Centre for Islamic Countries.

Organisation of Islamic Conference and Economic Statistical. Yearbook of Socio-economic Indicators of the OIC Member Countries. Ankara: Statistical, Economic, and Social Research and Training Centre for Islamic Countries, 1989.

Organisation of Islamic Conference and Economic Statistical. Yearbook of Socio-economic Indicators of the OIC Member Countries. Statistical, Economic, and Social Research and Training Centre for Islamic Countries, 1989.