Glendon, Mary Ann
West Academic Publishing, 1999
Buku Teks
Glendon, Mary Ann
West Academic Publishing, 1994
Buku Teks
Glendon, Mary Ann
St. Paul, Minn West Publishing 1991,
Buku Teks
Ehrmann, Henry W.
Prentice-Hall, 1976
Buku Teks
Glenn, H. Patrick.
Oxford University Press , 2014
Buku Teks