Tomasson, Richard F., author
Random Home, 1970
Buku Teks
Castells, Manuel, author
Blackwell, 1996
Buku Teks
edited, Frank J. Schwartz, Susan J. Pharr
Cambridge University Press , 2003
Buku Teks
edited by Jane K. Winn
Ashgate, 2006
Buku Teks
The University of Chicago Press,
Majalah, Jurnal, Buletin