The Chicago Manual of Style is available online. This reference book is normallly tethered to the reference section of the library but it can be now consulted online at any time.
Bibliographic managers can help with this task. The most common products (supported by Princeton) are Zotero, EndNote and RefWorks.
The library offers workshops for those interested to learn how to use Zotero, RefWorks or EndNote. Check the schedule to register for a session.
Zotero is a free open source bibliographic manager which runs into a Firefox browser. Instructions on downloading and using the software is available from the Zotero website.
Commonly used article/pdf managers: