APA

United States, . (2019). An Act to Direct the National Science Foundation to Support STEM Education Research Focused on Early Childhood. [Washington, D.C.]: [U.S. Government Publishing Office].

Chicago

United States, . 2019. An Act to Direct the National Science Foundation to Support STEM Education Research Focused on Early Childhood. [Washington, D.C.]: [U.S. Government Publishing Office].

Harvard

United States, . (2019). An Act to Direct the National Science Foundation to Support STEM Education Research Focused on Early Childhood. [Washington, D.C.]: [U.S. Government Publishing Office].

MLA

United States, . An Act to Direct the National Science Foundation to Support STEM Education Research Focused on Early Childhood. [Washington, D.C.]: [U.S. Government Publishing Office]. 2019.