Association of American Geographers. Commission on College Geography. Panel on Environmental Education, Panel on Environmental Education, Manners, I. R., & Mikesell, M. W. (1974). Perspectives on environment. [Association of American Geographers.
Citazione stile Chigago Style (17a edizione)Association of American Geographers. Commission on College Geography. Panel on Environmental Education, Panel on Environmental Education, Ian R. Manners, e Marvin W. Mikesell. Perspectives on Environment. Washington: [Association of American Geographers, 1974.
Citatione MLA (9a ed.)Association of American Geographers. Commission on College Geography. Panel on Environmental Education, et al. Perspectives on Environment. [Association of American Geographers, 1974.
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