Berlitz, Charles
Granada Publishing, 1977
Buku Teks
Timerman, Jacobo
Vintage Books , 1982
Buku Teks
Auerbach, Jerold S.
Oxford University Press, 1983
Buku Teks
Mitchell, David A.
McGraw-Hill , c.1979
Buku Teks
Muhammad Yunus
Gramedia pustaka utama, 2008
Buku Teks