Question: Who is a bestselling American writer known for his fictional and non-fictional accounts of police work in the United States, Joseph Wambaugh or Helen Zahavi?
Sentence (from "Joseph Wambaugh"): Joseph Aloysius Wambaugh, Jr. (born January 22, 1937) is a bestselling American writer known for his fictional and non-fictional accounts of police work in the United States.
Relevant evidence: Yes