Steel, Danielle, author
A Sphere Books , 1991
Buku Teks
White, Leslie Turner
Macfadden-Bartell Book, 1967
Buku Teks
Kerr, M. E.
Harper and Row , 1985
Buku Teks
Slaughter, Frank G
Pocket Books , 1968
Buku Teks
Thorp, Roderick
Random House, 1961
Buku Teks