David Crystal (2009). “List of cartoons ;The Hype About Texting ;How Weird is Texting? ;What is Distinctive About it? ;Why do They do it? ;Who Texts? ;What do They Text About? ;How do Other Languages do it? ;Why all the Fuss? ;Glossary ;Appendix ;Index”, p.158, Oxford University Press
"Hillary Clinton and Donald Trump Discuss Student Debt, Immigration, and More". Interview with Judith Ohikuare, www.cosmopolitan.com. October 11, 2016.