Não informado. (2018). Proceedings of the Portland Society of Natural History. Portland Society of Natural History.
Style de citation Chicago (17e éd.)Não informado. Proceedings of the Portland Society of Natural History. Portland, Me: Portland Society of Natural History, 2018.
Style de citation MLA (8e éd.)Não informado. Proceedings of the Portland Society of Natural History. Portland Society of Natural History, 2018.
Attention : ces citations peuvent ne pas être correctes à 100%.