McCrone, David
Routledge, 1998
Buku Teks
Laboratorium Sosiologi FISIP Andalas, 2011
Majalah, Jurnal, Buletin
Tischler, Henry L.
Holt Rinehart and Winston, 1986
Buku Teks
Karp, David A., author
Waveland Press Inc., 2004
Buku Teks
Robertson, Roland
Aksara Persada, 1986
Buku Teks