International Energy Agency. (1980). Report of the iea coal in industry advisory board. Paris: OECD.
استشهاد بنمط شيكاغوInternational Energy Agency. Report of the Iea Coal in Industry Advisory Board. Paris: OECD, 1980.
MLA استشهادInternational Energy Agency. Report of the Iea Coal in Industry Advisory Board. Paris: OECD, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.