Calhoun, D. W. (1978). Social Science in an Age of Change. New York: Harper and Row Publishers.
Dyfyniad Arddull ChicagoCalhoun, Donald W. Social Science in an Age of Change. New York: Harper and Row Publishers, 1978.
Dyfyniad MLACalhoun, Donald W. Social Science in an Age of Change. New York: Harper and Row Publishers, 1978.
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