Dyfyniad APA

Teggart, F. J. (1949). The idea of progress: A collection of readings (rev. ed.). University of California Press.

Dyfyniad Arddull Chicago

Teggart, Frederick John. The Idea of Progress: A Collection of Readings. rev. ed. Berkeley: University of California Press, 1949.

Dyfyniad MLA

Teggart, Frederick John. The Idea of Progress: A Collection of Readings. rev. ed. University of California Press, 1949.

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