Emery, Edwin, editor
Prentice-Hall, 1962
Buku Teks
Bollinger, Lee C., author
Oxford University Press, 2010
Buku Teks
Paneth, Donald, author
Facts on File, 1983
Buku Referensi
Kovach, Bill, author
Three Rivers Press, 2014
Buku Teks
Cohen, Bernard Cecil, 1926-, author
Princeton University Press, 1969
Buku Teks