Kaplan, Michael, author
PBC International, 1997
Buku Referensi
Saito, Gen Takeshi, author
Shotenkenchiku-sha-Co, 1989
Buku Referensi
Casamassima, Christy
PBC International, 1998
Buku Teks
Cohen, Edie Lee, author
Cahners, 1984
Buku Teks
Asensio, Paco, editor
Loft, 2002
Buku Referensi