Taub, Alexander
Pitching and closing : everything you need to know about business development, partnerships, and making deals that matter / Alexander Taub and Ellen DaSilva
McGraw-Hill Education, 2014
 Buku Teks
Geisst, Charles R.
Deals of the century
John Wiley & Sons, 2004
 Buku Teks
Hilliard, Elizabeth
Windows and doors
Conran Octopus Lim, 1996
 Buku Referensi
Stefanus Andriano
Komunikasi online dan offline komunikasi virtual di Indonesia = Online and offline communication virtual community in Indonesia / Stefanus Andriano
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2015
 UI - Tesis Membership
Churchill, Winston, Sir, 1874-1965
Closing the ring
Houghton Miffiln, 1951
 Buku Teks