Torday, Piers
Puffin Books, 2015
Buku Teks
Mari, Ogai
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
Johnson, Colin
Angus & Robertson, 1987
Buku Teks