How can I find the publisher and the place of publication of a web page?
In general the organisation on whose website the web page sits will be the publisher of the web page.
If the organisation is not immediately obvious then have a look at any About Us or Contact us information on the website, or scroll to the bottom of the page and look for copyright information, and you should see an organisation mentioned.
The address of the headquarters of the organisation should also be mentioned in these places on the website. You can treat the town or city where the organisation is based as the place of publication.