Citace podle APA (7th ed.)

PARRAGON BOOKS LTD. (2017). SELF- IMPROVEMENT PUZZLES BRAIN- BOOSTING CHALLENGES: PRACTICAL PUZZLES TO TRAIN YOUR BRAIN & IMPROVE YOUR MEMORY. PARRAGON BOOKS LTD.

Citace podle Chicago (17th ed.)

PARRAGON BOOKS LTD. SELF- IMPROVEMENT PUZZLES BRAIN- BOOSTING CHALLENGES: PRACTICAL PUZZLES TO TRAIN YOUR BRAIN & IMPROVE YOUR MEMORY. NEW YORK: PARRAGON BOOKS LTD, 2017.

Citace podle MLA (9th ed.)

PARRAGON BOOKS LTD. SELF- IMPROVEMENT PUZZLES BRAIN- BOOSTING CHALLENGES: PRACTICAL PUZZLES TO TRAIN YOUR BRAIN & IMPROVE YOUR MEMORY. PARRAGON BOOKS LTD, 2017.

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