Tobin, Allan J., author
Harcourt College Publishing, 2001
Buku Teks
Payne, Stanley Le Baron, author
Princeton University Press, 1951
Buku Teks
Seiberling, Frank, author
A Holt-Dryden Book, 1959
Buku Teks
Runciman, Lex, author
Allyn and Bacon, 1999
Buku Teks
Park, Ruth, author
Puffin Books, 1980
Koleksi Publik