(1961). The chemical industry 1967-1968. Paris: Organization for Economic Cooperation and Development.
استشهاد بنمط شيكاغوThe Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.
MLA استشهادThe Chemical Industry 1967-1968. Paris: Organization for Economic Cooperation and Development, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.