Resources found in databases generally include a SOURCE CITATION. Look for the "cite source" button, or look at the end of the article to find the source citation. Once you find it, all you need to do is copy and paste that SOURCE CITATION into your Works Cited page. Be sure to choose the style that your teacher requires (APA or MLA).
Online citation generators like BIBME or CITATION MACHINE or EASYBIB can also help you create a SOURCE CITATION. You can simply plug in the ISBN number from the back of a book you are using or the URL/WEB ADDRESS, and a SOURCE CITATION will be generated for you.
EasyBib: the bibliography maker.
* Note that if you sign up for an account in any of these resources, you can save your work.