Project Summary: Media Innovation & Entrepreneurship

I’m confused about how we’re formatting our endnotes. I’m looking online (https://owl.english.purdue.edu/owl/resource/717/05/) and seeing that the general format for citing a web source according to Chicago is this:
Firstname Lastname, “Title of Web Page,” Publishing Organization or Name of Website in Italics, publication date and/or access date if available, URL.
However, I’m looking at other chapter endnotes and they’re not all formatted like this - the endnotes usually include periods. How should they be formatted?