Saffady, William, author
American Library Association , 1999
Buku Teks
Kemp, D.A.
Clive Bingley , 1976
Buku Teks
Arnold, Pauline
Holiday House , 1963
Buku Teks
edited by G.W.A. Dummer, F.P. Thompson and J. Mackenzie Robertson
Pergamon Press, 1971
Buku Teks
Taylor, L. J. (Laurence John), author
Tamarisk Books, 1980
Buku Teks