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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Congress on Health Economics (1980 : Leiden, Netherlands), J. van der Gaag, और 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld 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.