Rivkind, Nina, author
Thomson/West, 2009.
Buku Teks
McCormick, Charles T. (Charles Tilford), 1889-1963, author
Foundation Press, 1976
Buku Teks
Cooper, Simon, author
Blackstone Press, 1997
Buku Referensi
Tracey, Richard R.S., author
Butterworth, 1975
Buku Teks
Hamilton, Robert W., author
West Publishing, 1984
Buku Teks