APA (7th ed.) Citation

Pennsylvania, Society for the Relief of Free Negroes, Unlawfully Held in Bondage, & Pennsylvania Society for Promoting the Abolition of Slavery. (1781). An act for the gradual abolition of slavery. [publisher not identified].

Chicago Style (17th ed.) Citation

Pennsylvania, Unlawfully Held in Bondage Society for the Relief of Free Negroes, and Pennsylvania Society for Promoting the Abolition of Slavery. An Act for the Gradual Abolition of Slavery. [Philadelphia]: [publisher not identified], 1781.

MLA (9th ed.) Citation

Pennsylvania, et al. An Act for the Gradual Abolition of Slavery. [publisher not identified], 1781.