Wolfgang, M. E. (1973). The Future society: Aspects of America in the year 2000. American Academy of Political and Social Science.
Citace podle Chicago (17th ed.)Wolfgang, Marvin E. The Future Society: Aspects of America in the Year 2000. Philadelphia: American Academy of Political and Social Science, 1973.
Citace podle MLA (9th ed.)Wolfgang, Marvin E. The Future Society: Aspects of America in the Year 2000. American Academy of Political and Social Science, 1973.
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