Chicago style outlines two distinct citation styles (14.2): Also known as "Humanities style." Sources are cited through footnotes (or endnotes) and a bibliography.
It is recommended practice, but not absolutely necessary, to cite your sources in both the notes and the bibliography.
The practice of including both notes and a bibliography is still common practice amongst humanities scholars, so make sure to consult your instructor.
You need to cite: Use Webster's Third New International Dictionary [print] and Merriam-Webster's Collegiate Dictionary [print] for standard spelling references for all Chicago citations (7.1).
You are responsible for the accuracy of all information in your notes and bibliography (13.6).
Also known as "Scientific/Social Sciences style." Sources are cited through parenthetical author-date references in the text and a reference list.