Sonic Drive-In (English Wikipedia)

tory (August 2, 2016). "The QSR 50". qsrmagazine.com. Retrieved March 28, 2018.
"Sonic Touts 3,500 Driven-Ins Milestone — Restaurant News". QSR magazine. January 2, 2009. Retrieved March 16, 2012.
"Inside America's Biggest Fast-Food Restaurants". QSR magazine. August 3, 2020. Retrieved July 12, 2022.

qsrweb.com

"Sonic Drive-In". Restaurant Business. November 1, 2020.
"Sonic Drive-In". www.restaurantbusinessonline.com.
"Sonic Drive-In". www.restaurantbusinessonline.com.
"Sonic Drive-In". Restaurant Business. Retrieved July 12, 2022.
Peter Romeo (March 6, 2018). "SONIC ADDS 2 GALS TO 'TWO GUYS'". RestaurantBusinessOnline.com. Retrieved July 10, 2018.

"2016 Annual Report to Stockholders" (PDF). Sonic corp. Archived from the original (PDF) on November 11, 2016. Retrieved November 10, 2016.
"Sonic Drive-In shakes things up for its 50 th Birthday in May" (PDF). Archived from the original (PDF) on September 17, 2012. Retrieved March 16, 2012.

Jennifer Lawinski (May 17, 2010). "Sonic Promotes 'Real Ice Cream' Launch With Free Shakes". Huffington Post Food. Archived from the original on August 24, 2012. Retrieved August 9, 2012.

"Ft. Lauderdale Beach Location". Sonic Beach. 2011. Retrieved May 31, 2012.
"Sonic Beach Florida Restaurants". Sonic Beach. 2014. Retrieved February 10, 2014.
"About Sonic Beach". Sonic Beach. 2011. Retrieved May 31, 2012.

Executive Team Member Profile: J. Clifford Hudson. Official Sonic Web Site, America's Drive-in Brand Properties LLC.
"Executive Bios". Retrieved August 9, 2012.

"2016 Annual Report to Stockholders" (PDF). Sonic corp. Archived from the original (PDF) on November 11, 2016. Retrieved November 10, 2016.
"17. Sonic Drive-In". franchisetimes.com. Archived from the original on July 12, 2022. Retrieved July 12, 2022.
"Sonic Drive-In shakes things up for its 50 th Birthday in May" (PDF). Archived from the original (PDF) on September 17, 2012. Retrieved March 16, 2012.
Ron Ruggless (September 7, 2009). "Sonic names Omar Janjua chain president". Nation's Restaurant News. Archived from the original on July 27, 2012. Retrieved November 27, 2019.
"Sonic Declares Preliminary Results". Zacks.com. September 18, 2009. Archived from the original on November 8, 2017. Retrieved November 27, 2019.
"Sonic Hatches New Animal Welfare Policy (Press release)". Humane Society. January 15, 2010. Archived from the original on January 14, 2011. Retrieved November 27, 2019.
Jennifer Lawinski (May 17, 2010). "Sonic Promotes 'Real Ice Cream' Launch With Free Shakes". Huffington Post Food. Archived from the original on August 24, 2012. Retrieved August 9, 2012.
Christi Ravneberg (April 20, 2012). "MenuMasters 2012: Sonic, America's Drive-In". Restaurant News. Archived from the original on July 26, 2012. Retrieved November 27, 2019.
"Sonic announced it would be opening seven locations in Hawaii in the near future - Honolulu, Hawaii news, sports & weather - KITV Channel 4". Kitv.com. Archived from the original on November 11, 2017. Retrieved November 7, 2017.

Goldberg, Emma (November 3, 2021). "In a 'Workers Economy,' Who Really Holds the Cards?". The New York Times. ISSN 0362-4331. Retrieved August 18, 2022.

Tomison, Bill (October 26, 2015). "SONIC Drive-In opens in Smithfield | WPRI 12 Eyewitness News". Wpri.com. Retrieved November 7, 2017.

Staff writer (September 18, 2009). "Sonic Declares Preliminary Earnings" ^{[dead link‍]}. Zacks Equity Research via Yahoo! Finance. Accessed 2009-10-16.

"Sonic Declares Preliminary Results". Zacks.com. September 18, 2009. Archived from the original on November 8, 2017. Retrieved November 27, 2019.