Mason, R. D., & Hermanson, R. H. (1970). Programmed Learning Aid For Business and Economic Statistics. Learning Systems.
استشهاد بنمط شيكاغوMason, Robert D., و Roger H. Hermanson. Programmed Learning Aid For Business and Economic Statistics. Homewood: Learning Systems, 1970.
MLA استشهادMason, Robert D., و Roger H. Hermanson. Programmed Learning Aid For Business and Economic Statistics. Learning Systems, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.