Não informado. (2019). Newsletter. Pennsylvania State University, Environmental Resources Research Institute.
Style de citation Chicago (17e éd.)Não informado. Newsletter. University Park, Pa: Pennsylvania State University, Environmental Resources Research Institute, 2019.
Style de citation MLA (8e éd.)Não informado. Newsletter. Pennsylvania State University, Environmental Resources Research Institute, 2019.
Attention : ces citations peuvent ne pas être correctes à 100%.