Stephan's Retrocomputing Site: Perry Mason - The Case of the Mandarin Murder DOS and Commodore 64 binaries as well as the manual. http://www.retrosite.de/adventure/mason/mason.html

MobyGames: Perry Mason: The Case of the Mandarin Murder Description and cover pictures. http://www.mobygames.com/game/sheet/gameId,1196/

Underdogs: Perry Mason: Case of The Mandarin Murder Screenshots, description and reviews. http://www.the-underdogs.org/game.php?id=817

Your Sinclair Review Rated 9/10 by Mike Gerrard. "Spectrum adventurers should definitely like Fish!" http://www.ysrnry.co.uk/articles/fish.htm