APA (7th ed.) Citation

Knowledgemotion Ltd.,, Crash Course US History,, & Green, J. (2021). Crash course US history. Crash Course US History.

Chicago Style (17th ed.) Citation

Knowledgemotion Ltd.,, Crash Course US History, and John Green. Crash Course US History. [Place of publication not identified]: Crash Course US History, 2021.

MLA (9th ed.) Citation

Knowledgemotion Ltd.,, et al. Crash Course US History. Crash Course US History, 2021.