Roodman, D. M., Bowling, A., Mitchell, J., & Peterson, J. A. (1996). Paying the piper: Subsidies, politics, and the environment. Worldwatch Institute.
Lua i Stíl Chicago (17ú heag.)Roodman, David Malin, April Bowling, Jennifer Mitchell, agus Jane A. Peterson. Paying the Piper: Subsidies, Politics, and the Environment. Washington, D.C: Worldwatch Institute, 1996.
Lua MLA (9ú heag.)Roodman, David Malin, et al. Paying the Piper: Subsidies, Politics, and the Environment. Worldwatch Institute, 1996.
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