The basic format for a journal article citation in APA style is as follows (pay attention to capitalization in the article and journal titles and to where italics appear).
In-text Citation:
(AuthorLastName, Year)
Reference List:

Example
In-text Citation (3-5 authors)
(Bull, Levine, Black, Schmiege, & Santelli, 2012)
Reference List

So where do you find this information on the article? See the image below for one example.
