There are two types of Chicago Style citations, Notes & Bibliography style and Author-Date style.
Note these examples reflect the 17th edition.
ZoteroBib is a free service to help people quickly create bibliographies. It doesn't need software download to operate, and it works on any device, including tablets and phones.
Here's a short demo of how ZoteroBib works:
To learn more about this service, please visit their blog entry "Introducing ZoteroBib: Perfect bibliographies in minutes"