There are APA Style citation and reference tools available within many library databases such as EBSCOhost, in word processing software such as Word and GoogleDocs, and online (free and paid options). These tools will automatically generate a citation in a given format (APA, MLA, etc.). While these tools may seem convenient at first glance, they often (almost always) contain errors. For example, you will notice that most such tools have a formal disclaimer directly adjacent to them. This exists because at some point, a student used the citation tool, and it generated an incorrect citation, then the student brought action against the database publisher. You can see EBSCO's disclaimer on the left.
YOU are responsible for ensuring the accuracy of all of your in-text citations and references. It is best to learn how to create a citation from scratch, but if you use a citation tool, make sure to double-check each citation for accuracy. The Publication Manual of the American Psychological Association (7th ed.) is the definitive authority for in-text citations and reference listings.