what is the four letter name for "notation for subsequent multiple authors in a citation?".

Is it IBID?
Thanks

yes

Thank you.

You're welcome.

PS -- ibid. is the abbreviation for ibidem which means "the same" in Latin.

No, the four-letter name for the notation for subsequent multiple authors in a citation is not "IBID." The correct term for this notation is "et al."

"Et al." is an abbreviation of the Latin phrase "et alii," which means "and others." It is used in citations to indicate that there are more authors beyond the first one listed. Typically, the full list of authors is provided in the first citation, and subsequent citations use "et al." to signify the additional authors without repeating their names. This helps to make citations more concise.

To find this answer, you can consult a style guide or manual of citation. Different citation styles may have different rules on how to indicate multiple authors. It's important to refer to the specific style guide recommended by your institution or publisher, such as the MLA Handbook, APA Publication Manual, or Chicago Manual of Style. These resources provide detailed information on citation rules, including how to handle multiple authors in different contexts.