Vielberth, J. (2008). KOD system: Current stage of development. Institute for Development and Research.
استشهاد بنمط شيكاغوVielberth, Johann. KOD System: Current Stage of Development. Regensburg: Institute for Development and Research, 2008.
MLA استشهادVielberth, Johann. KOD System: Current Stage of Development. Institute for Development and Research, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.