Mott, Frank Luther
New York The MacMillan Company 1947
Buku Teks
Hewet, Dorothy
Currency Press, 1985
Buku Teks
Bird, Isabella L
Oxford University Press, 1967
Buku Teks
Brown, Gordon, author
Prestasi Pustakaraya, 2009
Buku Teks
Dell Publishing , 1963
Buku Teks