The materials to be prepared are: computer, Word20 10.

1. First, after opening Word with the first reference written on it, put the mouse cursor in front of the reference, and then click the number icon option above.

2. Then click the "Define New Number Format" option on this page.

3. After that, enter the option "[1]" in the box below the page number format, set the alignment mode according to the requirements, and click the "OK" option.