By Parkinson, Judy, Judy Parkinson
By Sampson, Ana, Ana Sampson
By Taggart, Caroline
By Sukach, Jim
By Lewis, John
By Barton, John G.
By Ursula Harringman
By Bill Murray
By Gardner, Martin
By Bodycombe, David J.
By Allen, Robert
By Gower, David
By Danesi Ph.D., Marcel
By Arcturus Publishing
By Igloo Books
By Bradford, Anne R.
By Puzzler Media Ltd
By Doug Lennox
By Puzzler Media
By Allen, Robert, etc., Carter, Philip, Russell, Ken
By Etter, D. M.
By Connor, Alan
By Barham, Andrea
By Gareth Moore, Dermot Turing
By Schott, Ben
By Buzan, Tony, Kene, Raymond, Keene, Raymond
By Betty Kirkpatrick