Baumol, William J.
Harcourt, Brace Jovanovich College Publishers, 1991
Buku Teks
Baumol, William J.
Harcourt Brace Jovanovich, 1979
Buku Teks
Owen, Diane S.
Harcourt, Brace Jovanovich , 1991
Buku Teks
Brandis, Royall
Richard D. Irwin, 1959
Buku Klasik
Macgregor, D.H.
Oxford University Press, 1949
Buku Teks