Broto, Carles
New staircases
Links, [Date of publication not identified]
 Buku Referensi
Spens, Michael
Staircases: Detail in Building
Academic Edition, 1995
 Buku Teks
Arens, William F.
Contemporary advertising
Irwin /McGraw-Hill, 1999
 Buku Teks
Jones, Gareth R.
Contemporary management
McGraw-Hill, Irwin, 2006
 Buku Teks
Meserve, Bruce B.
Contemporary mathematics
Prentice-Hall, 1972
 Buku Teks