Chicago Style Guide, for 17th Edition

Introduction

         A note on citing materials found on a website: If you’re citing formal documentation (e.g. Word, PDF documents) found on a website, you should cite it like a book or journal article (including all relevant publisher information and a URL). For other information found on a website or page, make sure to include  some or all of the following elements in your bibliographic entry. Remember that each element is separated by a period (unless shown otherwise below):
 

1. Full name: of author(s) (Firstname Middlename Lastname). If no author is given, place the name of the publishing entity here.
2. Title of Web Page (in quotations).
3. Publisher Name of publishing entity (in italicized characters).
4. Publication date and/or access date (if no publication date given, access date is mandatory).
5. URL.

Basic Layout
(Footnote/Endnote)

Author Lastname, Firstname. “Title of webpage.” Name of publishing entity. Publication month/day/year. Access month/day/year. URL.

(Author-Date)

Author Lastname, Firstname. Publication Year.“Title of webpage.” Name of publishing entity. Publication month/day. Access month/day/year. URL.

 Examples