Asensio, Paco, author
HBI, 1999
Buku Teks
Mostaedi, Arian, author
Page One P, 2002
Buku Referensi
Livingston, Kathryn, author
Rockport, 1999
Buku Referensi
Meredith, Carol, author
Rockport Publishers, 2000
Buku Referensi
Rockport Publisher, 1998
Buku Teks