Sutcliffe, R.B., author
Addison-Wesley, 1971
Buku Teks
DePuy, Charles H.
John Wiley & Sons, 1975
Buku Teks
West, E.G.
Institute of Economic Affairs, 1965
Buku Teks
edited by Paul Dragos Aligica, Paul Lewis, Virgil H. Storr
Emerald, 2017
eBooks
Edward Elgar, 2005
Buku Teks