Forum:How to make that special wp cite link?

I've seen in some articles that contain a link to wp on a subject, have instead of a cite number in the exponent position, a [wp]. What's the markup to do that?

I would check the markup of a page containing such a link but of course now I can't find one.

Thanks
 * answer is in here-- Mie kal  06:40, 29 May 2014 (UTC)


 * Ah thanks, I was reading the references one, not the links one. ROPChain (talk) 06:46, 29 May 2014 (UTC)
 * Actually, you need Template:Wpl. The link provided by Miekal explains ordinary interwiki links.--ZooGuard (talk) 07:01, 29 May 2014 (UTC)
 * It should be added to those help pages. 07:04, 29 May 2014 (UTC)