APA recommends providing a Digital Object Identifier (DOI), when it is available. DOIs provide stable, long-lasting links for online articles. If a DOI is not available, do not use a web address (URL) for articles from a library database.
Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article: Subtitle words. Title of Periodical, volume number(issue number), pages. https://doi.org/xx.xxx/yyyyy
Nguyen, T. T., Gildengorin, G., & Truong, A. (2007). Factors influencing physicians' screening behavior for liver cancer among high-risk patients. Journal of General Internal Medicine, 22(4), 523-526. https://doi.org/10.1007/s11606-007-0128-1
Ryan, E., & Redding, R. (2004). A review of mood disorders among juvenile offenders. Psychiatric Services, 55(12), 1397-1407.