Ermisch, Marie-Luise. “Behind Our Doors: A Memoir of Esther Warmerdam As Told to William Butt (2011) by Esther Warmerdam”. Alberta Journal of Educational Research 60, no. 3 (September 24, 2015): 602–605. Accessed September 29, 2022. https://journalhosting.ucalgary.ca/index.php/ajer/article/view/55830.