Cita APA (7a ed.)

Campbell, P. B., & Howard, P. (1957). America needs an ideology. Frederick Muller.

Cita Chicago Style (17a ed.)

Campbell, Paul B., y Peter Howard. America Needs an Ideology. London: Frederick Muller, 1957.

Cita MLA (9a ed.)

Campbell, Paul B., y Peter Howard. America Needs an Ideology. Frederick Muller, 1957.