Campbell, A., & Schuman, H. (1969). Racial attitudes in fifteen American cities. Survey Research Center, Institute for Social Research, University of Michigan.
芝加哥风格引文Campbell, Angus, 与 Howard Schuman. Racial Attitudes in Fifteen American Cities. Ann Arbor, Mich.: Survey Research Center, Institute for Social Research, University of Michigan, 1969.
MLA引文Campbell, Angus, 与 Howard Schuman. Racial Attitudes in Fifteen American Cities. Survey Research Center, Institute for Social Research, University of Michigan, 1969.
警告：这些引文格式不一定是100％准确.