In a professional email you need to quote something from a document. The document's creator is unknown. How do you write this?

Question

This is in a professional email. I need to quote something but it's unknown who wrote the text.

I'm quoting from a document that was sent to the person that I'm writing the email to. I need to clarify something, and to do so I need to quote from a section in the document. The document and the section have names, but the creator of the document is unknown.

Is it okay to put it like this?

In (the name of the document)'s (the name of the section) it is said, "XXXXXXXXXXXXXXXXXX."

I looked for examples but I couldn't find any that's worded the same. I'm wondering if there is a better way to write this.

Answer 1

If the work has an unknown author, cite the source by title. Titles of books and reports are italicized or underlined; titles of articles, chapters, and web pages are in quotation marks.

In rare cases, "Anonymous" is used for the author, treat it as the author's name (Anonymous, 2019).