In EndNote, change your reference type to Book Section. This allows you to add in the author names and the editor names in separate fields, and both sets of names will appear in your reference list. This reference type also lets you add the title of the chapter and the title of the book in separate fields. Make sure you also enter the page number range for the chapter in your EndNote reference.

If you need further assistance with referencing you can consult the Referencing Guide or contact Library Help.