Kiyosaki, Robert T., 1947-, author
Gramedia Pustaka Utama, 2003
Buku Teks
Kwan, Kevin, author
Gramedia Pustaka utama, 2017
Buku Teks
Harvard Business School Press, 1991
Buku Teks
Christophers S. Chapman
Oxford, 2005
Buku Teks
Beaufre, Andre
Frederick A. Praeger, 1966
Buku Teks