Chatfield, Christopher, author
Chapman & Hall, 1992
Buku Teks
Raykov, Tenko, author
Routledge, Taylor & Francis Group, 2008
Buku Teks
Feinstein, Alvan R., author
Yale University Press, 1996
Buku Teks
Kachigan, Sam Kash, author
Radius Press, 1991
Buku Teks
Dunteman, George Henry
Sage Publications, 1984
Buku Teks