Worcester, D. A. (1969). Pecuniary and technological externality, factor rents and social costs. Institute of Economic Development and Research, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Worcester, Dean Amory. Pecuniary and Technological Externality, Factor Rents and Social Costs. Quezon City: Institute of Economic Development and Research, University of the Philippines, 1969.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Worcester, Dean Amory. Pecuniary and Technological Externality, Factor Rents and Social Costs. Institute of Economic Development and Research, University of the Philippines, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.