Some other good reads for your parents....

1. The Perfect Storm (JKD Capital, July 2017). Investment quarterly report from an American fund managing company. It pretty much points out many valid points about housing correction/crash in Toronto.
http://spartanfunds.ca/documents/Libertas/2017%20Mid-Year%20End%20Letter%20Final.pdf

2. An amazing blog with daily entries from Garth Turner (ex Member of the Canadian Parliament, ex Cabinet Minister in charge of CRA). he is now an Investment advisor who gives some great advice on his daily blog! 
http://www.greaterfool.ca/

3. John Pasalis, realtor, President at Realosophy Realty. Not biased compared to others in industry. Good twitter feed.
https://twitter.com/johnpasalis?lang=en