Crain Communications (English Wikipedia)

Klein, David (June 14, 2010). "Growing up in the glow of technology". BtoB Online. Archived from the original on November 3, 2013. Retrieved March 22, 2012.

businessweek.com

"Company Overview of Advertising Age". Bloomberg Businessweek. Archived from the original on July 20, 2009. Retrieved April 20, 2012.
"Company Overview of Crain's New York Business". Bloomberg Businessweek. Archived from the original on March 13, 2011. Retrieved April 20, 2012.

Rondon, Michael (October 2, 2013). "BtoB Magazine Becomes Part of Ad Age". Folio. Archived from the original on March 4, 2016. Retrieved June 28, 2020.

"Automotive News". HighBeam Research. Archived from the original on January 7, 2012. Retrieved April 20, 2012.

"Crain Communications Inc". Hoover's. Archived from the original on September 30, 2010. Retrieved March 9, 2012.

"Modern Healthcare". InsideView. Archived from the original on May 14, 2013. Retrieved April 20, 2012.

"Crain Communications To Move Its Corporate Headquarters" (Press release). Crain Communications. January 15, 2001. Retrieved June 28, 2020 – via The Auto Channel.

Klein, David (June 14, 2010). "Growing up in the glow of technology". BtoB Online. Archived from the original on November 3, 2013. Retrieved March 22, 2012.
Pogrebin, Robin (July 23, 1996). "Gertrude Crain, 85, Chairwoman Of Business Publishing Company". The New York Times. Archived from the original on May 14, 2013.
"Crain Communications Inc". Hoover's. Archived from the original on September 30, 2010. Retrieved March 9, 2012.
Rondon, Michael (October 2, 2013). "BtoB Magazine Becomes Part of Ad Age". Folio. Archived from the original on March 4, 2016. Retrieved June 28, 2020.
"Company Overview of Advertising Age". Bloomberg Businessweek. Archived from the original on July 20, 2009. Retrieved April 20, 2012.
"Automotive News Articles". Access My Library. Gale. Archived from the original on May 2, 2012. Retrieved April 20, 2012.
"Automotive News". HighBeam Research. Archived from the original on January 7, 2012. Retrieved April 20, 2012.
"AutoWeek Magazine Names New Publisher, Publishing Director and Sales Manager". The Free Library. Archived from the original on October 12, 2013. Retrieved April 20, 2012.
"Company Overview of Crain's New York Business". Bloomberg Businessweek. Archived from the original on March 13, 2011. Retrieved April 20, 2012.
"Modern Healthcare". InsideView. Archived from the original on May 14, 2013. Retrieved April 20, 2012.