Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_22901612_2 ( citation VARCHAR, region VARCHAR )

### Question ###
If the region is the Southern district of Texas, what is the citation?

### Accurate SQL ###

SELECT citation FROM table_22901612_2 WHERE region = "Southern District of Texas"