Mack, Lorie
Conran Octopus, 1998
Buku Teks
Mack, Eric
Rigby, 1976
Buku Teks
Rosenblatt, Arthur, author
John Wiley & Sons, 2001
Buku Teks
Hudson, Kenneth, author
MacMilan Press, 1980
Buku Referensi
Jodidio, Philip, author
Taschen GMBH, 2011
Buku Referensi