H+Pedia allows an element of original research.
1. Substantial original edits should be tagged with the category Category:Original research.
2. Resources such as links to 3rd party resources are typically self referring and as such do not require citations.
3. Summaries of linked 3rd party content, where there is a link on the page that doubles as a citation, e.g. if linking to an official site or Wikipedia page
However, if your reference doesn't fall under these categories, you may be asked to cite it. Ultimately, unqualified uncited materials may be removed.