Parkhurst, Wiliam
Harper Business, 2000
Buku Teks
Novita Arlika Rahmayanti, author
2018
UI - Skripsi (Membership)
Sutarsyah
Perpustakaan Nasional RI, 2015
Artikel Jurnal
Hendrix, Jerry A., author
Wadsworth, 2001
Buku Teks
Wulan Dwi Mentari, author
2019
UI - Tesis (Membership)