Most databases also have a citation tool for you to use that will create your citation for you. Usually there are a list of tools along the right side or the top of the screen and there will be a link that says something like Cite, Citation Tools, CiteNow! When you email a database article, you can choose which type of citation style you want to be emailed to you along with the article.
Always check your program-generated citations for accuracy and correct form.
You can use one of these websites to help you create a citation. You will definitely need to double check that it is accurate.