Teaching controversial issues in the classroom : key issues and debates. London ; New York : Continuum, [2012]. ©2012. 1 online zdroj (xv, 239 stran). EducationEducation. Available on Internet: <https://ebookcentral.proquest.com/lib/ujep-ebooks/detail.action?docID=6033968> ISBN 978-1-4411-3630-5.