Campbell, H. (1880). Unto the third and fourth generation: A study. Fords, Howard & Hulbert.
Dyfyniad Arddull ChicagoCampbell, Helen. Unto the Third and Fourth Generation: A Study. New York: Fords, Howard & Hulbert, 1880.
Dyfyniad MLACampbell, Helen. Unto the Third and Fourth Generation: A Study. Fords, Howard & Hulbert, 1880.
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