King, Chris, author
Longman, 1992
Buku Teks
King, Chris, author
Longman, 1994
Buku Teks
by Harry L. Brown ... [et al.]
Fairmont Press, 1996
Buku Teks
by Alain Chauvel ... [and others]; translated by Ryle Miller
McGraw-Hill, 1981
Buku Teks
Murphy, Regina M.
McGraw-Hill, 2007
Buku Teks