https://www.lemon64.com/games/details.php?ID=1671
https://www.gamesdatabase.org/game/commodore-64/microprose-pro-soccer
https://www.gamesdatabase.org/Media/SYSTEM/Commodore_64//Manual/formated/Microprose_Pro_Soccer_-_1988_-_MicroProse_Ltd..pdf
https://www.c64-wiki.com/wiki/Microprose_Soccer#Links
http://www.zzap64.co.uk/cgi-bin/displaypage.pl?issue=46&page=25