Referencia bibliográfica:

Kovach, J., Petzoldt, C., Degni, J., & Tette, J. (1992). A method to measure the environmental impact of pesticides. New York’s Food and Life Sciences Bulletin, 139, 1–8. https://ecommons.cornell.edu/items/2feca8d7-3889-4a41-aae9-a2ce0f16a6e2