How to put square brackets around the serial numbers of references in papers

1. Open WPS office software and create a blank document, as shown below.

2. Place the cursor where brackets are needed, and then click "Quote-Insert Endnote" in the menu bar, as shown below.

3. Select endnotes, and right-click to select footnotes and endnotes, as shown below.

4. Select the style of square brackets in the pop-up box, and then click Apply to execute, as shown in the figure below.

5. Complete and present the effect, as shown in the figure below.