Hello!
While it is good that you are being careful to list all sources that you've used in your research there is no need to include a website on your references page that you haven't used in the body of your paper. One of the most important aspects of proper use of APA is that your in-text citations and your references page match. So, if it is important to show that you've used the business website in order to meet the requirements of your assignment then go ahead and throw an in-text citation into the paper to let the reader know that you found the department types by using the website. That way you've met the requirements of the assignment and you've assured that your in-text citations and references page match.
