Really nice examples of cites to business sources. Not from the "official" APA, but created by a group of business librarians to follow APA 7 guidelines as closely as possible with non-standard, non-academic business sources.
Use the left-margin menu to look for sources in an A-Z list (e.g. Ad$pender, e-Statement Studies, MarketLine, Mergent, SRDS, etc.)

Good explanations and examples. See his Research Guide for links directly to specific resource examples.

Nicely spelled out ...

Open the + menus in the left margin to find guidance and examples for different source types.

One of many excellent sources from the Online Writing Lab (OWL) at Purdue University.

A blogpost from the APA itself about how to cite ChatGPT. It discusses "situations where students and researchers use ChatGPT to create text and to facilitate their research, not to write the full text of their paper or manuscript."

Although this online content really will not replace the books on AMA style, there are some general tips on writing here. There are also more general tips on communication.