Institute of purchasing & supply. (1945). Procurement. Institute of purchasing and supply.
استشهاد بنمط شيكاغوInstitute of purchasing & supply. Procurement. Burmingham: Institute of purchasing and supply, 1945.
MLA استشهادInstitute of purchasing & supply. Procurement. Institute of purchasing and supply, 1945.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.