Egmose, Jonas, author
Routledge, 2015
Buku Teks
Hart, Chris, author
Sage Publications, 2007
Buku Teks
edited by G. P. Ginsburg.
Wiley, 1979
Buku Teks
Mills, C. Wright, author
Grove Press, 1961
Buku Teks
Mills, C. Wright, author
Oxford University Press, 1978
Buku Teks