APA in text citation of a government web document.

How do I cite this within the text?

As stated in the discussion of module two, deficient knowledge and skills are a personal challenge and a strategy must be determined to build proficiency in identifying "mechanisms that evaluate the extent to which treatment is culturally and linguistically appropriate."

The reference citation would be:

culturalcompetence.txt. (n.d.). Retrieved from

http://www.dhss.delaware.gov/SI06/files/culturalcompetence.txt