Mari, Ogai
The wild geese
Charles E. Tuttle, 1959
 Buku Teks SO
Torday, Piers
The last wild
Puffin Books, 2015
 Buku Teks SO
Extreme earth: wildlife, wild places, wild weather
Robert Cornraads and five outhers, author
Reader's Digest, 2015
 Buku Referensi
Frazer, James George, Sir, 1854-1941
Spirits of the corn and of the wild
Macmillan, 1955
 Buku Teks
Gaffney, Patricia
Wild at heart / Patricia Gaffney
Topaz Book, 1997
 Buku Teks SO