Vern
发表
Claude,
Christopher,
Ronald,
1980,
American Journal of Sociology.
Vern,
Tommy,
Inéz,
2009
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W. Ivancic,
A. Gurtov,
Vern,
2002
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Claude,
James,
Daniel,
1981,
American Journal of Sociology.
Bailey,
Claude,
James,
1984,
American Journal of Sociology.