Cita APA (7a ed.)

Schmidt, S. W., & Shelley, M. C. (1993). American government and politics today: The essentials (1993-1994 edition.). Thomson/Wadsworth, West Publishing.

Cita Chicago Style (17a ed.)

Schmidt, Steffen W., y Mack C. Shelley. American Government and Politics Today: The Essentials. 1993-1994 edition. Australia ; New York ; Belmont, CA: Thomson/Wadsworth, West Publishing, 1993.

Cita MLA (8a ed.)

Schmidt, Steffen W., y Mack C. Shelley. American Government and Politics Today: The Essentials. 1993-1994 edition. Thomson/Wadsworth, West Publishing, 1993.