Kay, Dennis, author
Twayne, 1995
Buku Teks
Ishay, Michreline R., author
Alfred A. Knopf, 1967
Buku Teks
Gordon, Andrew, author
Oxford University Press, 2003
Buku Teks
Perlmutter, Amos, author
RajaGrafindo Persada, 2000
Buku Teks
Orum, Anthony M., author
Rowman & Littlefield Publishers, 1999
Buku Teks