Newspaper articles are included in the Journals, Newspapers & Magazines section of the referencing guide:
APA 7th cites a newpaper article from the online edition of the Australian in the following way:
Writer/author. (Year, Month date). Title [Letter to the editor]. Title of newspaper. URL
In-text
Swan (2017) OR Swan, 2018
Reference List
Swan, D. (2017, February 28). Change afoot at shoe firm. The Australian.
Note: In APA 7th a URL should not be included if the article is accessed via the library's subscription databases or behind a paywall.
