Murdock, George Peter
Social structure
Free Press, 1965
 Buku Teks SO
Murdock, George Peter
Social structure
Macmillan, 1960
 Buku Teks SO
G.D.H.Cole
Studies in class structure
Carter lane, 1955
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Mills, Edwin S.
Studies in the structure of the urban economy
Johns Hopkins Press, 1972
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Cole, George Douglas Howard, 1889-1959
Studies in class structure
Routledge and Kegan Paul, 1955
 Buku Teks