coauthor
/kɔʊˈæθɔr/Definitions
1. noun
A person who jointly produces a written work, such as a book or article, with one or more others.
“The coauthors of the bestselling novel were interviewed on a popular TV show.”
2. verb
To write or produce (a work) in collaboration with one or more others.
“The two scientists coauthored several papers on the new discovery.”