Author's last name, "Shortened Title."
For example:
(Williams, "Article Title")
If you are not mentioning the author's last name in the text of your sentence, include the last name and the shortened article title separated by a comma in parentheses after the reference. Here's an example:
("Williams, Shortened Title").
To cite a non-paginated source like a website or a PDF file, you may use a paragraph number, section title, or heading instead of a page number. Format your citation as follows:
(Williams, "Shortened Title," para. 5) or (Williams, "Shortened Title," sec. 3)
If there are no paragraph numbers, section titles, or headings available, it is best to omit the page number from the citation. Ensure accuracy and consistency in your citations throughout your paper to avoid confusion.