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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিPVO-NGO/NRMS Project, World Learning Inc, CARE (Firm), World Wildlife Fund, United States. Agency for International Development, Michael Brown, এবং JoEllen McGann. A Guide to Strengthening Non-governmental Organizationeffectiveness in Natural Resources Management. Washington, D.C.: PVO-NGO/NRMS Project, 1996.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিPVO-NGO/NRMS Project, et al. A Guide to Strengthening Non-governmental Organizationeffectiveness in Natural Resources Management. PVO-NGO/NRMS Project, 1996.