Ypma, Herbert, author
Thames & Hudson, 1999
Buku Referensi
Ypma, Herbert, author
Thames & Hudson, 2000
Buku Referensi
Ypma, Herbert, author
Thames & Hudson, 2000
Buku Referensi
Aurora Cuito, Alejandro Bahamón, Wendy Griswold
HBI, 2001
Buku Teks
edited by martin Nicholas Kunz
teNeues, 2003
Buku Teks