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_9320 ( "Length feet (m)" text, "Width feet (m)" text, "Load short tons (MT)" text, "Truss type(s)" text, "Year built" text, "Source (Year)" text )

### Question ###
What is the width for hte truss with a source of zacher (1994)?

### Accurate SQL ###

SELECT "Width feet (m)" FROM table_9320 WHERE "Source (Year)" = 'zacher (1994)'