Mannheim, Karl, author
Routledge & Kegan Paul, 1953
Buku Teks
Williams, Anne, author
Butterworth-Heinemann , 1998
Buku Teks
Hertz, Frederick
Routledge & Kegan Paul Ltd., 1957
Buku Teks
Hertz, Frederick
Oxford University Press, 1944
Buku Teks
by Howard Becker ... [and others] ; edited by John Gillin
Macmillan, 1954
Buku Teks