Hello, Chloe. Open one of your items, for example, "Merlin revisited" - at the top you will see a number (in this case, #1893669.) Here is how you would link your work in the forum using the {bitem:} command:

{bitem:1893669} =

Merlin revisited  (13+) The story of King Arthur from Merlin's point of view with some Celtic mythology included #1893669 by Chloe

Regards,
Michelle