Bloomenthal, Harold S., author
Little, Brown, 1977
Buku Teks
Hudson, Alastair, author
Sweet and Maxwell, 2008
Buku Teks
edited by Karl-Eduard von der Heydt and Stanley Keller
Graham & Trotman, 1995
Buku Teks
edited by Ernest L. Folk
Sage Hill, 1971
Buku Teks
Hazen, Thomas Lee, author
West Publishing, 1996
Buku Teks