(1981). Belgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development.
استشهاد بنمط شيكاغوBelgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development, 1981.
MLA استشهادBelgium-Luxembourg. [Paris]: Organisation for Economic Co-operation and Development, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.