APA (7th ed.) Citation

Thomas, C. &. C. (1850). Map of North America. Thomas, Cowperthwait & Co.

Chicago Style (17th ed.) Citation

Thomas, Cowperthwait & Co. Map of North America. Thomas, Cowperthwait & Co, 1850.

MLA (9th ed.) Citation

Thomas, Cowperthwait & Co. Map of North America. Thomas, Cowperthwait & Co, 1850.

Warning: These citations may not always be 100% accurate.