Instructions 20Q Game: These are similar to full games, but for quizzes larger than 20 questions it will randomly select 20 questions from within the set. This is a quick way to get in some studying of a topic.     
Who wrote the following?

"Valley of the Dolls" (1966), "The Love Machine" (1969), and "Once Is Not Enough" (1973)
Margaret Atwood
Robert James Waller
Jacqueline Susann
Michael Pollan