Answer:
The personnel department -  Internal  source
The Department of Labor - external source
 Other industry associations - external source
Step-by-step explanation:
the  personnel department is an internal source of data because the personnel is within the organisation and they are the ones responsible for storing and managing the data of employees
The Department of Labor is an external source of data because data held by the Department of Labor include salaries paid to employees base on the the type of labor provided to different companies as a representative of the  large corporation so this data would be gotten from different companies
Other industry associations is an external source of data because Other industry associations is not within the large corporation