Fisk, Peter, author
Capstone, 2009
Buku Teks
Ni Ketut Agustiani, author
Universitas Indonesia, 2017
UI - Tesis (Membership)
Harvard Business School Publication, 2001
Buku Teks
Dyche`, Jill, author
Addison-Wesley, 2002
Buku Referensi
Buttle, francais, author
Elsevier/Butterworth-Heinemann, 2009
Buku Teks