APA-čujuhus (7. p.)

PARRAGON. (2011). SPOT THE DIFFERENCE 100 BRAND NEW PICTUE PUZZLES- CAN YOU SPY ALL THE DIFFERENCES ? PARRAGON.

Chicago-čujuhus (17. p.)

PARRAGON. SPOT THE DIFFERENCE 100 BRAND NEW PICTUE PUZZLES- CAN YOU SPY ALL THE DIFFERENCES ? BATH: PARRAGON, 2011.

MLA-čujuhus (9. p.)

PARRAGON. SPOT THE DIFFERENCE 100 BRAND NEW PICTUE PUZZLES- CAN YOU SPY ALL THE DIFFERENCES ? PARRAGON, 2011.

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