Barkan, Steven E., author
Prentice-Hall, 2012
Buku Teks
Barkan, Steven E., author
Pearson/Prentice Hall, 2006
Buku Teks
Mills, C. Wright, author
Grove Press, 1961
Buku Teks
Mills, C. Wright, author
Oxford University Press, 1978
Buku Teks
Riley, Matilda White
Harcourt, Brace and world, 1963
Buku Teks