Hamilton, R.A., author
Pinguin Books, 1958
Buku Teks
Karina Liriani Putri, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Skripsi (Membership)
Uchino, Kenji, author
CRC Press, 2010
Buku Teks
Birley, Sue, author
Financial Times Prentice Hall, 2000
Buku Teks
Kirzner, Israel M., author
The University of ChicagoPress, 1973
Buku Teks