Baumol, William J., author
N.Y. Harcourt Brace Jovanovich , 1982
Buku Teks
Gilpin, Robert, author
Princeton University Press, 1965
Buku Teks
Chacholiades, Miltiades, author
McGraw-Hill, 1981
Buku Teks
Magdoff, Harry, author
Modern Reader Paperbacks, 1969
Buku Teks
Bach, George Leland, author
Prentice Hall of India, 1977
Buku Teks