Tilbury, Alex
English unlimited : upper intermediate
Cambridge University Press, 2011
 Multimedia
Tilbury, Alex
English unlimited : upper intermediate
Cambridge University Press, 2011
 Multimedia
Klammer, Thomas
The capital budgeting process / Thomas Klammer, Jan Bell, Shahid Ansari
Irwin Mcgraw-Hill, 2000
 Buku Teks
McCarthy, Michael
English vocabulary in use : upper-intermediate & advanced
Erlangga, 2002
 Buku Teks SO
Tilbury, Alex
English unlimited : B2 upper intermediate teacher's Pack
Cambridge University Press , 2011
 Buku Teks