Template talk:Ukraine administrative division population estimate 2013

Can anyone explain how this works?
I've noticed that this template is missing a period in the article. My edit was reverted, but the period is still there. Also, why is this template even used? Why not cite the reference in a usual way?--Adûnâi (talk) 01:15, 27 April 2017 (UTC)
 * As far as I am concerned, there are too many periods in Truskavets, currently it gives .). . Concerning the template, it is used in several thousands articles, and needed in case the reference changes (for instance, moved to a different url), which happened before.--Ymblanter (talk) 07:09, 27 April 2017 (UTC)
 * Thanks for the explanation! But there should be a period after the parenthesis and before the reference, as it's the end of the sentence. I wonder how it can be adjusted if the template itself doesn't have different versions depending on the position.--Adûnâi (talk) 15:15, 28 April 2017 (UTC)
 * Why do you say it should be two periods? Is this written somewhere in WP:MOS? To be honest, I copied the template from one of the templates on Russian censusses, nobody complained in twn years.--Ymblanter (talk) 15:47, 28 April 2017 (UTC)
 * Btw I am currently using Ua-pop-est2015, and, since the extimates come every year, will try to update to later years. The grammar is the same in all templates.--Ymblanter (talk) 07:10, 27 April 2017 (UTC)