Kirkpatrick, Graeme, 1963-, author
Polity Press, 2013
Buku Teks
John Richard Sageng
Springer, 2012
eBooks
Rubinstein, Moshe F., author
Prentice-Hall, 1966
Buku Teks
Finch, Christopher, author
NY The Monacelli Press, 2013
Buku Referensi
Myers, Dale K., author
Oak Cliff Press , 1999
Buku Teks