edited by Talcott Parsons
Free Press, 1961
Buku Teks
Kumar, Krishan, author
Blackwell, 1996
Buku Teks
Wan, Henry Y., author
Harcourt Brace Jovanovich, 1971
Buku Teks
Holcombe, Arthur N.
New York University press, 1948
Buku Teks
Hyman, David N.
Times Mirror/Mosby College, 1986
Buku Teks