APA (7th ed.) Citation

Cambridge Educational (Firm), Films for the Humanities & Sciences (Firm), & Infobase. (2007). Amendment 13: Abolition of slavery. Infobase.

Chicago Style (17th ed.) Citation

Cambridge Educational (Firm), Films for the Humanities & Sciences (Firm), and Infobase. Amendment 13: Abolition of Slavery. New York, N.Y.: Infobase, 2007.

MLA (8th ed.) Citation

Cambridge Educational (Firm), et al. Amendment 13: Abolition of Slavery. Infobase, 2007.