Washington misses out on cutting edge technology, Reuters, November 19, 2013 [2013-12-01], (原始内容存档于2013-12-03) CGI Group to acquire Stanley for $1.07bn
Companies, Says Study. EDGE Media Network. [22 August 2015]. (原始内容存档于2015-05-10). 查看维基词典中的词条「同性戀友好」。 Human Rights Campaign, lobby group for LGBT rights (页面存档备份,存于互联网档案馆)