Lull, James, author
Yayasan Obor Indonesia, 1997
Buku Teks
Lull, James, author
Yayasan Obor Indonesia, 1998
Buku Teks
Wilson, Stan Le Roy, author
McGraw-Hill, 1995
Buku Teks
Hartley, John, author
Cambridge University Press, 2006
Buku Teks
Hartley, John, author
Routledge, 2002
Buku Teks