Hipple, Jack, author
Springer, 2012
eBooks
Anthony, Scott D., author
PT Elex Media Komputindo, 2016
Buku Teks
Hinssen, Peter, author
McGraw-Hill, 2015
Koleksi Publik
Winarto, author
Business School Universitas Pelita Harapan, 2018
Artikel Jurnal
Patient, Peter, author
Gramedia, 1985
Buku Teks