Andrews, Richard B.
The Free Press, 1971
Buku Teks
O`Sullivan, Arthur
Irwin McGraw-Hill, 2000
Buku Teks
O`Sullivan, Arthur
McGraw-Hill, 2012
Buku Teks
O`Sullivan, Arthur
McGraw-Hill, 2012
Buku Teks
Von Mises, Ludwig, 1881-1973
Yale University Press, 1963
Buku Klasik