Sinaga, Aries Ricardo, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi (Membership)
Adilla Surihayati, author
2016
UI - Skripsi (Membership)
Knaap, Gerrit, author
KITLV Press , 1999
Buku Referensi
Sandi Billy, author
2015
UI - Skripsi (Membership)
Ria Duta Rahmawati, author
2017
UI - Skripsi (Membership)