Eisner, R. (1978). Factors in business investment. Published for the National Bureau of Economic Research by Ballinger Pub.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Eisner, Robert. Factors in Business Investment. Cambridge, Mass: Published for the National Bureau of Economic Research by Ballinger Pub, 1978.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Eisner, Robert. Factors in Business Investment. Published for the National Bureau of Economic Research by Ballinger Pub, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.