The OWL (Online Writing Lab) website from Purdue University provides some great examples of citing in APA style.

There are certain basic things you need to cite just about any source, using just about any format:

The AUTHOR (or creator) of the work.  This may be one person, many people, or a group or organization.
The TITLE OF THE WORK itself.  For example, the article title, the book title, the chapter title, etc.
The JOURNAL or the PUBLISHER or the ORGANIZATION RESPONSIBLE FOR THE CONTENT.  For an article, include the name of the specific magazine or journal.  For a book, the publishing house. For a website/webpage, include individual authors, if they are noted. Otherwise include the organization name.
The PUBLICATION DATE.
Certain things must be included for specific types of works.  For example, you would provide page numbers for an article or a book chapter.  For a website, you would provide the URL.

In APA style:

• Italicize the titles of books, journals, and technical reports. 
• Do not italicize the titles of journal articles or book chapters.

The moment when you are most likely to have easy access to all of this information?  When you find it in the first place.  Know then what you need to take note of to cite it effectively later.

Citing a Book: Provide the author(s) of the book, publication year, title of the book (italicized), and publisher.

Author, A. A., & Author, B. B. (Year). Title of the book (italicized). Publisher.

Citing a Book Chapter: Provide the author(s) of the chapter, publication year, title of the chapter, editors of the book, book title (italicized), page range of the chapter, publisher, and DOI or URL if available.

Author, A. A. (Year). Title of the chapter. In E. E. Editor (Ed.), Book Title (pp. xx–xx). Publisher. DOI or URL (if available for online books)

Citing a Journal Article: Include the author(s), publication year, article title, journal name (italicized), volume number (italicized), issue number (in parentheses, if available), page range of the article, and DOI (if available). 

Author, A. A., & Author, B. B. (Year). Title of the article. Journal Name, volume(issue), page range. DOI (if available online)

Citing a Technical Report: Include the author(s), publication year, title of the report (italicized), report number, publisher, and DOI or URL (if available)

Author, A. A., & Author, B. B. (Year). Title of the report (Report No. 123). Publisher. URL (if available online)
Example:

Long, J. W., Walsh, D., Coppoletta, M., Tompkins, R. E., Meyer, M. D., Isbell, C., Bohlman, G. N., & North, M. P. (2023). Interventions to restore wildfire-altered forests in California. https://research.fs.usda.gov/treesearch/66673