G.D.H.Cole
Studies in class structure
Carter lane, 1955
 Buku Teks
Cole, George Douglas Howard, 1889-1959
Studies in class structure
Routledge and Kegan Paul, 1955
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Forcese, Dennis P.
The Canadian class structure
McGraw-Hill Ryerson, 1980
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Cole, George Douglas Howard, 1889-1959
Studies in class structure
Routledge and Paul, 1955
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Spring, Joel
American education /​ Joel Spring.
McGraw-Hill, 2002
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