Walker, Kenneth, author
Oxford University Press, 1955
Buku Teks
Cullen, Robert, 1949-, author
Ivy Books, 1994
Buku Teks
Eichner, Bill, author
Chelsea Green Publishing Company, 2001
Buku Teks
Durham, David Anthony, author
Random House, 2001
Buku Teks
Buck, Pearl S. (Pearl Sydenstricker), 1892-1973, author
A. Signet Book, 1971
Buku Teks