Pearce, D., Pearce, C., & Palmer, C. (2002). Valuing the environment in developing countries: Case studies. Edward Elgar.
Lua i Stíl Chicago (17ú heag.)Pearce, David, Corin Pearce, agus Charles Palmer. Valuing the Environment in Developing Countries: Case Studies. Cheltenham, England: Edward Elgar, 2002.
Lua MLA (9ú heag.)Pearce, David, et al. Valuing the Environment in Developing Countries: Case Studies. Edward Elgar, 2002.
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