APA

United States, . (2016). An Act to Adopt the Bison as the National Mammal of the United States. [Washington, D.C.]: [U.S. Government Publishing Office].

Chicago

United States, . 2016. An Act to Adopt the Bison as the National Mammal of the United States. [Washington, D.C.]: [U.S. Government Publishing Office].

Harvard

United States, . (2016). An Act to Adopt the Bison as the National Mammal of the United States. [Washington, D.C.]: [U.S. Government Publishing Office].

MLA

United States, . An Act to Adopt the Bison as the National Mammal of the United States. [Washington, D.C.]: [U.S. Government Publishing Office]. 2016.