For example, if you used a book as a source that was written by Harry Potter and Luna Lovegood, your Works Cited entry would start “Potter, Harry. "
To continue the previous example, you would write the names of the two authors as “Potter, Harry and Luna Lovegood. "
For example, suppose you were using a book as a source that was written by Severus Snape, Minerva McGonagall, and Horace Slughorn. Your Works Cited entry would start “Snape, Severus et al. “[5] X Research source
For example, you might write “The class intended to teach students how to defend themselves against the dark arts, however, was ineffective (Potter and Lovegood 47). “[7] X Research source
For example, you might write “Hogwarts professors were deeply disturbed that Voldemort appeared to have infiltrated the school (Snape et al. 92). “[9] X Research source
For example, you might write “Potter and Lovegood described the Defense Against the Dark Arts class as worthless when it came to teaching them anything they could use to protect themselves from a wizard as powerful as Voldemort (47).