Steine, Naomi, 1966- , author
American Management Association, 2009
eBooks
Puan Puti Reno Sativa Sutan Aswar, auhtor
Yayasan Warna Warni Indonesia, 2017
Buku Teks
Clinton Antonius, author
2017
UI - Skripsi (Membership)
Patty, C. Wayne, author
PWS Publishing, 1993
Buku Teks
Siebert, Eleanor D., author
McGraw-Hill, 1982
Buku Teks