Clifton-Mogg, Caroline, author
Pageone , 2001
Buku Referensi
Knackstedt, Mary V., author
Wiley, 2005
Buku Referensi
Miebach, Barbel, author
Monacelli Press, 2009
Buku Referensi
Grey, Johnny, author
A Cassell Book, 1994
Buku Referensi
Saito, Gen Takeshi, author
Shotenkenchiku-sha-Co, 1989
Buku Referensi