Levine, Murray (2007). "Pollyanna and the Glad Game: A potential contribution to positive psychology". The Journal of Positive Psychology. 2 (4). Informa UK Limited: 219–227. doi:10.1080/17439760701552311. ISSN1743-9760. S2CID143522225.
Gann, Patrick (7 August 2009). "Mother (2004)". RPGFan. Archived from the original on 2 October 2013. Retrieved 30 September 2009.
semanticscholar.org
api.semanticscholar.org
Levine, Murray (2007). "Pollyanna and the Glad Game: A potential contribution to positive psychology". The Journal of Positive Psychology. 2 (4). Informa UK Limited: 219–227. doi:10.1080/17439760701552311. ISSN1743-9760. S2CID143522225.
"Parcheesi". Elliott Avedon Virtual Museum of Games. University of Waterloo. Archived from the original on 6 March 2015. Retrieved 29 November 2014. - retrieved 6 March 2015
web.archive.org
Michael Quinion. "POLLYANNA". World Wide Words (Michael Quinion). Archived from the original on 7 February 2009. Retrieved 25 January 2009.
"Parcheesi". Elliott Avedon Virtual Museum of Games. University of Waterloo. Archived from the original on 6 March 2015. Retrieved 29 November 2014. - retrieved 6 March 2015
Gann, Patrick (7 August 2009). "Mother (2004)". RPGFan. Archived from the original on 2 October 2013. Retrieved 30 September 2009.
worldcat.org
search.worldcat.org
Levine, Murray (2007). "Pollyanna and the Glad Game: A potential contribution to positive psychology". The Journal of Positive Psychology. 2 (4). Informa UK Limited: 219–227. doi:10.1080/17439760701552311. ISSN1743-9760. S2CID143522225.
worldwidewords.org
Michael Quinion. "POLLYANNA". World Wide Words (Michael Quinion). Archived from the original on 7 February 2009. Retrieved 25 January 2009.