The Book of Legends vol. 1 is the story behind the world record of Dr. Bak and his son, William Bak. All Dr. Bak had in mind was to keep his promise of writing a book with his son. They ended up writing 8 children's books within a month, scoring a new world record. William is also the youngest author having published in two languages. Those are world records waiting to be confirmed.  

Available on Amazon:  

https://www.amazon.ca/Book-Legend-Standard-Dr-Nguyen/dp/1989536271/ref=sr_1_4?keywords=the+book+of+legends+dr+bak&qid=1572962825&sr=8-4 

Available on Apple Book:  

https://books.apple.com/us/book/the-book-of-legends/id1470191028 

BARNES AND NOBLE:  

https://www.barnesandnoble.com/w/the-book-of-legend-william-bak/1134703746?ean=9781989536131