I think You should always cite it when referencing/paraphrase it and just put the actual reference in your bibliography/reference list.
If the resource has different page numbers then use those like (Author Surname, Publish Date, p.XX) each time.
Alternatively you could work it into the paragraph by writing it like...
Author Surname states that.... ‘quote or paraphrase’ (date, or date and pager number).
Better to be safe then sorry 🙂