Sources Consulted for Factual Information about Sigwan

• National Film Board of Canada. "NFB -- Sigwan" National Film Board of Canada. http://nfb.ca/trouverunfilm/fichefilm.php?id=53270&v=h&lg=en&exp=.
• Office national du film du Canada. "ONF -- Sigwan" Office national du film du Canada. http://nfb.ca/trouverunfilm/fichefilm.php?id=53271&v=h&lg=fr&exp=.