World Congress on Health Economics (1980 : Leiden, Netherlands), Gaag, J. v. d., & Perlman, M. (1981). Health, economics, and health economics: Proceedings of the World Congress on Health Economics, Leiden, The Netherlands, September 1980. North-Holland Pub.
Citace podle Chicago (17th ed.)World Congress on Health Economics (1980 : Leiden, Netherlands), J. van der Gaag, a Mark Perlman. Health, Economics, and Health Economics: Proceedings of the World Congress on Health Economics, Leiden, The Netherlands, September 1980. Amsterdam: North-Holland Pub, 1981.
Citace podle MLA (9th ed.)World Congress on Health Economics (1980 : Leiden, Netherlands), et al. Health, Economics, and Health Economics: Proceedings of the World Congress on Health Economics, Leiden, The Netherlands, September 1980. North-Holland Pub, 1981.