Mishan, E J
Penguin book, 967
Buku Teks
Martin, Andre J.
John Wiley & Sons, 1995
Buku Teks
Bye, Raymond T., author
Appleton-Century-Crofts, 1947
Buku Teks
Barnett, Raymond A., author
Prentice Hall International, 1996
Buku Teks
edited by M. Kabir Hassan
Edward Elgar Publishing, 2017
Buku Teks