HILTON A, . (1984). 101 PUZZLES TO SOLVE ON YOUR MICROCOMPUTER. LONDON: HARRAP LIMITED.
HILTON A, . 1984. 101 PUZZLES TO SOLVE ON YOUR MICROCOMPUTER. LONDON: HARRAP LIMITED.
HILTON A, . 101 PUZZLES TO SOLVE ON YOUR MICROCOMPUTER. LONDON: HARRAP LIMITED. 1984.