APA
Smith S. S., . (2015). The American Congress 7/Edn. : Cambridge.
Chicago
Smith Steven S, . 2015. The American Congress 7/Edn. : Cambridge.
Harvard
Smith S. S., . (2015). The American Congress 7/Edn. : Cambridge.
MLA
Smith Steven S, . The American Congress 7/Edn. : Cambridge. 2015.