Titis Wahyu Setiyowati, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Tesis Membership
Tyler, Anne
Ballantine Books, 1996
Buku Teks
longman, 1983
Buku Teks
Higashino, Keigo, author
Gramedia Pustaka Utama, 2021
Buku Teks
Redita Devi, author
2016
UI - Skripsi (Membership)