Output Styles...aka Reference Styles
EndNote X6 comes pre-loaded with hundreds of styles including APA 6th, Chicago 16th, IEEE , ACS, as well as a number of styles for specific journals. The Writing Center provides documentation regarding styles and their use.
To choose an Output style in your EndNote library, click on the drop-down arrow on the EndNote toolbar.
If the style you need is not included in the pre-loaded list, you can download the style and add it to EndNote inventory.