APA

United States, . (2020). An Act to Amend the National Trails System Act to Provide for the Study of the Emancipation National Historic Trail, and for Other Purposes. [Washington, D.C.]: [U.S. Government Publishing Office].

Chicago

United States, . 2020. An Act to Amend the National Trails System Act to Provide for the Study of the Emancipation National Historic Trail, and for Other Purposes. [Washington, D.C.]: [U.S. Government Publishing Office].

Harvard

United States, . (2020). An Act to Amend the National Trails System Act to Provide for the Study of the Emancipation National Historic Trail, and for Other Purposes. [Washington, D.C.]: [U.S. Government Publishing Office].

MLA

United States, . An Act to Amend the National Trails System Act to Provide for the Study of the Emancipation National Historic Trail, and for Other Purposes. [Washington, D.C.]: [U.S. Government Publishing Office]. 2020.