Rifky Mubarak, author
2018
UI - Tugas Akhir
Vania Febrina, author
2017
UI - Skripsi (Membership)
Corbin, Charles B., author
McGraw Hil , 2013
Buku Teks
Hahn, Fredrick, author
American Management Association;, 2009
eBooks
Dzurrotun Nafisah, author
Universitas Indonesia, 2017
UI - Skripsi (Membership)