Set up a “select language page” in wordpress

Hi all,
any idea how to set up a “select language page” in wordpress?

I mean like the these examples:
https://www.blog.exxcorpio.com/2009/07/07/50-best-examples-of-select-your-language-pages/

Currently I’m using the plugin WPML to set the languages.

Thanks a lot!
cl3rik