Yeoman, John, author
Random House, 2009
Buku Teks
Torday, Piers, author
Puffin Books, 2015
Buku Teks
Mari, Ogai, author
Charles E. Tuttle, 1959
Buku Teks
Robert Cornraads and five outhers, author
Reader's Digest, 2015
Buku Referensi
Gaffney, Patricia
Topaz Book, 1997
Buku Teks