Mannheim, Karl, author
Routledge & Kegan Paul, 1956
Buku Teks
Weber, Max, 1864-1920, author
Routledge & Kegan Paul, 1977
Buku Teks
Merrill, Francis E. (Francis Ellsworth), 1904-1969, author
Prentice-Hall, 1965
Buku Teks
Brym, Robert J., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Mannheim, Karl, author
Routledge & Kegan, 1951
Buku Teks