Cita APA (7th ed.)

Campbell, A., & Schuman, H. (1969). Racial attitudes in fifteen American cities. Survey Research Center, Institute for Social Research, University of Michigan.

Cita Chicago (17th ed.)

Campbell, Angus, i Howard Schuman. Racial Attitudes in Fifteen American Cities. Ann Arbor, Mich.: Survey Research Center, Institute for Social Research, University of Michigan, 1969.

Cita MLA (8th ed.)

Campbell, Angus, i Howard Schuman. Racial Attitudes in Fifteen American Cities. Survey Research Center, Institute for Social Research, University of Michigan, 1969.