APA-viite (7. p.)

Não informado. (2018). Proceedings of the Portland Society of Natural History. Portland Society of Natural History.

Chicago-viite (17. p.)

Não informado. Proceedings of the Portland Society of Natural History. Portland, Me: Portland Society of Natural History, 2018.

MLA-viite (8. p.)

Não informado. Proceedings of the Portland Society of Natural History. Portland Society of Natural History, 2018.

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