Cita APA (7a ed.)
American University (Washington, D.C.). Center for Congressional and Presidential Studies. Congress & the presidency. Routledge, Taylor & Francis Group.
Cita Chicago Style (17a ed.)
American University (Washington, D.C.). Center for Congressional and Presidential Studies. Congress & the Presidency. London.: Routledge, Taylor & Francis Group.
Cita MLA (9a ed.)
American University (Washington, D.C.). Center for Congressional and Presidential Studies. Congress & the Presidency. Routledge, Taylor & Francis Group.
Precaución: Estas citas no son 100% exactas.