Inserting number of pages (not page number)

I think the best solution in my case is to modify my style from the menu ‘‘Output Styles’’/ ‘‘Footnotes’’ / ‘‘Reference Types’’ and change the end of the sequence of each reference (book, section of books, etc.) and replace the  (, p. Cited Pages|.) by  (, Cited Pages|.) . With this solution, I can add the letter ‘‘p.’’ according to my needs…I hope