David Newman
[American Management Association, ], 2013
eBooks
Arung Srikandi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Skripsi (Membership)
Mather, Hal, author
McGraw-Hill, 1984
Buku Teks
Pilyar, Yuri
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks
Dewie Sekar, author
Gramedia Pustaka Utama , 2019
Buku Teks