MACFADDEN, Patrick D. Peter Ohlin et al. John Grierson and the NFB. Theatre Research in Canada / Recherches théâtrales au Canada, [S. l.], v. 7, n. 1, 1986. Disponível em: https://journals.lib.unb.ca/index.php/TRIC/article/view/7411. Acesso em: 6 may. 2024.