Levin & Kirkpatrick. (1965). Quantitative approaches to management. McGraw hill book company.
استشهاد بنمط شيكاغوLevin و Kirkpatrick. Quantitative Approaches to Management. New York: McGraw hill book company, 1965.
MLA استشهادLevin و Kirkpatrick. Quantitative Approaches to Management. McGraw hill book company, 1965.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.