Most databases will have a tab or link in a record that formats the information for the article or book into APA Style from which you can copy and paste. Again, it's always a good idea to check carefully what it is you get from this. This is particularly true when you use the database LexisNexis Academic, which seems to cause the most problems with the citations it generates.
Chicago Manual of Style Online is the online version of the manual along with some FAQ's.
Citing Sources is a Temple libguide about citing in general, with a link to the Chicago Style on the basics of Chicago Style citations based on the Manual.
