Regional Science Association. British Section & Cripps, E. L. (1975). Regional science: New concepts and old problems. Pion : [Distributed by Academic Press].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Regional Science Association. British Section و E. L. Cripps. Regional Science: New Concepts and Old Problems. London: Pion : [Distributed by Academic Press], 1975.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Regional Science Association. British Section و E. L. Cripps. Regional Science: New Concepts and Old Problems. Pion : [Distributed by Academic Press], 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.