PVO-NGO/NRMS Project, World Learning Inc, CARE (Firm), World Wildlife Fund, United States. Agency for International Development, Brown, M., & McGann, J. (1996). A Guide to strengthening non-governmental organizationeffectiveness in natural resources management. PVO-NGO/NRMS Project.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)PVO-NGO/NRMS Project, World Learning Inc, CARE (Firm), World Wildlife Fund, United States. Agency for International Development, Michael Brown, و JoEllen McGann. A Guide to Strengthening Non-governmental Organizationeffectiveness in Natural Resources Management. Washington, D.C.: PVO-NGO/NRMS Project, 1996.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)PVO-NGO/NRMS Project, et al. A Guide to Strengthening Non-governmental Organizationeffectiveness in Natural Resources Management. PVO-NGO/NRMS Project, 1996.