Cassandra Clare (2012). “Cassandra Clare: The Mortal Instruments Series (5 books): City of Bones; City of Ashes; City of Glass; City of Fallen Angels, City of Lost Souls”, p.1898, Simon and Schuster
"Famed author Mary Higgins Clark on faith, optimism and how she and her daughter Carol came to collaborate on a TV pilot". Interview with John W. Kennedy, www.beliefnet.com.