Meny, Yves
Oxford University Press, 1998
Buku Teks
Kitzinger, Uwe W., author
Frederick A. Praeger, 1963
Buku Teks
Gallagher, Michael, author
McGraw-Hill, 2011
Buku Teks
Roberts, Geoffrey
Manchester University Press, 1984
Buku Teks
edited by Steven Muller
Macmillan, 1963
Buku Teks