Gutkind, E. A.
The Free Press of Glencoe, 1963
Buku Teks
Orum, Anthony M.
Blackwell, 2003
Buku Teks
Mercer, Charles
Penguin Books, 1975
Buku Teks
edited by Nick Jewson and Susanne Macgregor
Routledge, 1997
Buku Teks
Jean-Marie Huriot, Jaques-Franscois Thise
Cambridge Univ. Press, 2009
Buku Teks