Book Chapters as separate references

I am looking to create a bibliography where the chapters I am referencing from the same book (with a single author) have separate entries.


I have created separate entries for each of the references (Book section) using copy and paste and then changed the book section.  Yet when I try to reference the separate chapters in word 2007 using C-W-Y-W the first chapter reference citation is repeated and only one entry appears in the bibliography


Any suggestions about what I am doing wrong?

Are they entered as Book Section reference types? I assume that the title is the the chapter title and chapter authors and not the otherway around (with the book title in the title field, which would look like duplicates to Endnote).