Barber, C. V., Johnson, N., & Hafild, E. (1994). Breaking the logjam: Obstacles to forest policy reform in Indonesia and the United States. World Resources Institute.
Lua i Stíl Chicago (17ú heag.)Barber, Charles Victor, Nels Johnson, agus Emmy Hafild. Breaking the Logjam: Obstacles to Forest Policy Reform in Indonesia and the United States. Washington, DC: World Resources Institute, 1994.
Lua MLA (9ú heag.)Barber, Charles Victor, et al. Breaking the Logjam: Obstacles to Forest Policy Reform in Indonesia and the United States. World Resources Institute, 1994.
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