By Batsford
By Eastaway, Rob, Haigh, John
By Polya, G.
By Ridley, Frances
By Kirkby, Dave
By Shasha, Dennis
By Bellos, Alex, Lyttleton, Ben, Gerrell, Spike
By Glenn, William H., Johnson, Donovan Albert
By Jones, Andrew M.
By Millington, Jon
By The Open University
By Riley, Peter
By Singh, Simon
By Gould, Wayne
By Stewart, Ian
By Edmiston, Margaret C.
By Houghton Mifflin Harcourt
By Tahan, Malba, Clark, Leslie, Reid, Alastair, Baquero, Patricia Reid
By Thomas, Jerry R., Nelson, Jack K.
By Bensons MapGuides
By Hann, Judith
By Devlin, Keith
By Carroll, Lewis
By The Times Mind Games
By Livio, Mario
By Gardner, Martin
By Sachar, Louis
By Jenny Tyler, Graham Round