https://writingcooperative.com/7-ways-to-end-a-nonfiction-essay-77c07ffe97dd
https://thewritelife.com/nonfiction-writing-techniques/
https://www.masterclass.com/articles/how-to-write-a-nonfiction-book
https://www.leeandlow.com/writers-illustrators/articles/writing-powerful-endings
https://www.creativindie.com/how-to-write-a-non-fiction-book-that-changes-lives/
https://www.creativindie.com/how-to-write-a-non-fiction-book-that-changes-lives/
https://www.dailywritingtips.com/write-non-fiction-book/
http://www.butte.edu/departments/cas/tipsheets/style_purpose_strategy/non_fiction.html