Add reference to a list of references

How to add a reference to a list of references.

Your cursor should already be positioned on the first line of the reference(s).

If your cursor is on a single two-string array, such as:
```
		['W. Gao 2016a', 'doi.org/10.1021/acs.jnatprod.5b01063']
	
```
1. Copy the entire line of the existing two-string array.
2. After the first open bracket, add [, where is a tab character.
3. After the close bracket, add , then press return and then tab.
4. Paste the original two-string array that you copied earlier.
5. Press the return key, and then add ] (where is two tab characters).
Otherwise, it is one the first line of an array containing two or more two-string arrays, such as:
```
	[	['Charchoglyan 2007', 'doi.org/10.1016/j.phytochem.2007.06.004'],
		['Sparling 2015', 'doi.org/10.1021/acs.orglett.5b01121']
	]
	
```
1. Copy the entire line of the last two-string array.
2. Add , to the end of the last two-string array.
3. At the beginning of the next line, paste the two-string array that you just copied.

Edit the last reference in the group of references to match the new reference.