Racial attitudes in fifteen American cities :
Black data file documentation, Jan.-March, 1968 : frequencies addendum /
principal investigators, Angus Campbell, Howard Schuman.

APA Citation

Campbell, A., Schuman, H., Inter-university Consortium for Political and Social Research., University of Michigan. Institute for Social Research. Social Science Archive. (1973). Racial attitudes in fifteen American cities: Black data file documentation, Jan.-March, 1968 : frequencies addendum. SSA ed. Ann Arbor, Mich.: ISR Social Science Archive, Institute for Social Research.

MLA Citation

Campbell, Angus, 1910-1980, Howard Schuman, Inter-university Consortium for Political and Social Research, and University of Michigan. Institute for Social Research. Social Science Archive. Racial Attitudes In Fifteen American Cities: Black Data File Documentation, Jan.-March, 1968 : Frequencies Addendum. SSA ed. Ann Arbor, Mich.: ISR Social Science Archive, Institute for Social Research, 1973.

Warning: These citations may not always be complete (especially for serials).