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.1532, Simon and Schuster
"Hello Reddit – I’m Bill Gates, co-chair of the Bill & Melinda Gates Foundation and Microsoft founder. Ask me anything". Reddit AMA, www.reddit.com. February 10, 2014.