Format: 

Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article. Title of Periodical, Volume(Issue), Pages. http://dx.doi.org/xxxxx or Retrieved from URL

Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article. Title of Periodical, Volume(Issue), Pages.

Examples: 

Sikdar, S. K. (2012). Measuring sustainability. Clean Technologies and Environmental Policy, 14(2), 153-154. http://dx.doi.org/10.1007/s10098-012-0479-0

In-text: (Sikdar, 2012, p. 153)

Notes: 

If each issue of a journal begins on page 1, give the issue number in parentheses immediately after the volume number.

Source:
APA - 7.01, no. 1-5
APA (ER) - no. 1-5