Directly Editing Bibliographies
It is always best to make changes to your final bibliography by correcting the data in the EndNote library, editing the output style you are using, or adding or deleting citations from your paper. Then, after making the necessary changes, format the bibliography to make the corrections automatically.
It is not always possible for EndNote to format the bibliography exactly as needed, so you might need to manually edit the formatted bibliography. If you must do this, remember that if you reformat a paper after editing the bibliography, EndNote will not preserve your edits. When EndNote reformats a bibliography, it deletes the existing one and puts a new one in its place.
You can edit the bibliography as you would any text. The bibliography may be shaded, but you can still edit it. If you later reformat the paper, your edits will be gone.
You can add text after the bibliography, but make sure to put it after the end of the formatted bibliography—outside of the bibliography field.
Note: See Modifying Style Templates.