Clark, Kenneth W.
Prentice-Hall, 1971
Buku Teks
Crouch, Robert L.
Harcourt Brace Jovanovich , 1972
Buku Teks
Ferguson, C. E., author
Duke University Press, 1964
Buku Teks
Havrilesky, Thomas M.
AHM Publishing , 1978
Buku Teks
Bernadetta Dwi Suatmi, author
Lembaga Penelitian Ekonomi IBII, 2008
Buku Teks