Sanders, Donald H., author
McGraw-Hill, 1977
Buku Teks
Silverman, Max, author
Routledge, 1999
Buku Teks
Mannheim, Karl, author
Harcourt, Brace, 1951
Buku Teks
Radlow, James, author
McGraw-Hill, 1986
Buku Teks
Fowler, Peter J., author
Routledge, 1995
Buku Teks