PACE, Judith L. Hard questions : learning to teach controversial issues. Lanham ; Boulder ; New York ; London : Rowman & Littlefield, [2021]. ©2021. 1 online zdroj (227 stran). Dostupné na internetu: <https://ebookcentral.proquest.com/lib/ujep-ebooks/reader.action?docID=6455071> ISBN 978-1-4758-5198-4.