Estall, R. C., & Buchanan, R. O. (1973). Industrial activity and economic geography: A study of the forces behind the geographical location of productive activity in manufacturing industry (Third edition.). Hutchinson.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Estall, Robert C., و Robert Ogilvie Buchanan. Industrial Activity and Economic Geography: A Study of the Forces Behind the Geographical Location of Productive Activity in Manufacturing Industry. Third edition. London: Hutchinson, 1973.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Estall, Robert C., و Robert Ogilvie Buchanan. Industrial Activity and Economic Geography: A Study of the Forces Behind the Geographical Location of Productive Activity in Manufacturing Industry. Third edition. Hutchinson, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.