How can I use Custom Table in my MVC application ?

I've created a website with an entry form for their pets( Pet Name, Age, Pet Type ) and then on the admin side I want to display the list of entries. And my problem was this, I cannot import the CMS.CustomTables namespace in my project so I cannot use Custom Table API. This is first time I use Kentico and the company requirements was to use MVC to all the websites created in Kentico CMS and the CMS version was 8.2. Is there another solution to my problem ? Please help me solve this problem.