Não informado. (1960). Conservationist. New York State Department of Environmental Conservation.
Style de citation Chicago (17e éd.)Não informado. Conservationist. Albany, NY: New York State Department of Environmental Conservation, 1960.
Style de citation MLA (8e éd.)Não informado. Conservationist. New York State Department of Environmental Conservation, 1960.
Attention : ces citations peuvent ne pas être correctes à 100%.