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.