edited by Michael Pacione
Routledge, 2014
Buku Teks
edited by Michael Pacione.
Barnes & Noble Books, [1983;1983;1983;1983;1983, 1983]
Buku Teks
Clout, hugh D
Pergamon Press, 1977
Buku Teks
edited by D.T. Herbert and R.J. Johnston
John Wiley & Sons, 1978
Buku Teks
Getis, Arthur, author
McGraw-Hill Higher Education, 2009
Buku Teks