Cita APA (7a ed.)

May, E. R. (1960). American intervention: 1917 and 1941. American Historical Association, Service Center for Teachers of History.

Cita Chicago Style (17a ed.)

May, Ernest R. American Intervention: 1917 and 1941. Washington, DC: American Historical Association, Service Center for Teachers of History, 1960.

Cita MLA (9a ed.)

May, Ernest R. American Intervention: 1917 and 1941. American Historical Association, Service Center for Teachers of History, 1960.