Buku Teks
edited by Richard Parncutt and Gary E. McPherson
Oxford University Press, 2002
Buku Teks
North, Adrian C., author
Oxford, 2008
Buku Teks
Miller, George A. (George Armitage), 1920-2012, author
Harper & Row , 1962
Buku Teks
Carlson, Neil R., author
Allyn and Bacon, [date of publication not identified]
Buku Teks