Wu, Yuan-Li, author
Crane,Russak and Company, 1973
Buku Teks
Ferra Ronsumbre, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2020
UI - Skripsi (Membership)
Cotterill, Rodney, author
Cambridge University Press, 1989
Buku Referensi
Abu Hammam Mahendra Jaya, author
2014
UI - Skripsi (Membership)
Fakultas Teknik Universitas Indonesia, 1997
UI - Tugas Akhir