BoxOffice® Pro - May 2011
Paramount Wins 2011 Studio Battle - Box Office Mojo
Contagion - Box Office Mojo
Summer 2011 Box Office | The Mary Sue
Domestic box office plummets 80% in 2020 | S&P Global Market Intelligence
15 Biggest Box Office Flops of 2011: THR Year In Review – The Hollywood Reporter
Genre and the UK box office 2011 | Research into film
Box Office 3D: The Filmest of Films (2011) - IMDb
Thor - Box Office Mojo
INTERNATIONAL BOX OFFICE NUMBERS July 17 | Showbuzz Daily
Summer box office hits record $4.4 billion, but... | EW.com
Home Box Office, Inc. | Vanity Fair | February 2011
Box-Office Wrap-Up: Jan. 21 - Jan. 23, 2011 - ComingSoon.net
2011 Box Office Report
Celluloid Adventures 2: Artistic Triumphs...Box Office Bombs: Anez, Nicholas: 9781936168125: Amazon.com: Books
Global box office hit $38.3bn in 2015 | News | Screen
Sky Box Office HD - The Expendables - January 2011 Promo - YouTube
15 Biggest Box Office Flops of 2011: THR Year In Review – The Hollywood Reporter
Box Office Report 2011: The Year Dips | EW.com
China box office takings top $2bn in 2011 - BBC News
Box Office 3D: The Filmest of Films (2011) - IMDb
Some major Box office records and their holders (2011 vs 2021) : r/boxoffice
Sequels and Comic Book Movies Rule 2011 Box Office | TIME.com
