User talk:108.31.160.102

Hello....I'm very new to Wikipedia and trying to assist someone who has written a Wikipedia page. I need to list references to the information already written and have learned how to use the citation footnotes. However, the page written is about a financial company and we want to attach pdf files (SEC filings) as the references. I've read the tutorials but since we are not citing a journal, published works, or a webpage, is it possible to cite pdf files as your backup documentation. Thank youPsenda2018 (talk) 19:31, 17 February 2018 (UTC)