How to typeset word references

The typesetting methods of references in word are as follows (taking word20 19 of windows 10 system as an example):

1, open the word document, and select the reference that needs the top grid.

2. Then click the left alignment button at the top of the interface.

3. Then place the mouse cursor on the misaligned reference.

4. Press the backspace key until the references are aligned, and you can see that the references have been printed in the top space.