Worcester, D. A. (1969). Pecuniary and technological externality, factor rents and social costs. Institute of Economic Development and Research, University of the Philippines.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (9ú heag.)Worcester, Dean Amory. Pecuniary and Technological Externality, Factor Rents and Social Costs. Institute of Economic Development and Research, University of the Philippines, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.