Worcester, D. A. A unified theory of external effects of social cost [microfilm]. Photoduplication Service, University of the Philippines Library,1976.
Chicago Style (17th ed.) CitationWorcester, Dean A. A Unified Theory of External Effects of Social Cost [microfilm]. Quezon City: Photoduplication Service, University of the Philippines Library,1976.
MLA (9th ed.) CitationWorcester, Dean A. A Unified Theory of External Effects of Social Cost [microfilm]. Photoduplication Service, University of the Philippines Library,1976.
Warning: These citations may not always be 100% accurate.