Sort through numbers using awk

By | June 13, 2018

I need to sort a list by the ISBN NUMBER (the third column) from an input file to a and sent to an out file (file.out). The input file (file.input) would have a list

Donald Smith,Fire Lands,97868545414459
Adam Barry,The Armies,97564325678855
Jennifer Lelan,Childhood dreams,97546766544237

using a looping structure to process the data and the titles Author Name of book ISBN.