If you are including a quote from a work and another quote or reference is contained within, do not alter or omit anything, but do not include the embedded quote in your reference list.
For more on this, see the APA Style website:
All information and page number references are based on the 6th edition of the Publication Manual of the American Psychological Association (2009/10).
Need a copy of the Publication Manual? Click here for details. See Also: APA Style Guide to Electronic References, Sixth Edition