Latham-Koenig, Ch., Oxenden, C., Boyle, M. (2014): English File Intermediate Plus Student’s Book. Oxford: Oxford University Press. ISBN 978-0-19-455831-0

Další zdroje: www.howjsay.com

https://elt.oup.com/student/englishfile/intplus3/?cc=cz&selLanguage=cs

https://elt.oup.com/student/englishfile/preint3/?cc=cz&selLanguage=cs

https://elt.oup.com/student/englishfile/elementary3/?cc=cz&selLanguage=cs

https://agendaweb.org, https://agendaweb.org/resources-learning-english.html, https://www.helpforenglish.cz/