AURA. (2019). MEMORY PUZZLES: EXERCISE YOUR BRAIN TO IMPROVE YOUR MEMORY. AURA.
Čikaški stil citiranja (17. izdanje)AURA. MEMORY PUZZLES: EXERCISE YOUR BRAIN TO IMPROVE YOUR MEMORY. LONDON: AURA, 2019.
MLA način citiranja (9. izdanje)AURA. MEMORY PUZZLES: EXERCISE YOUR BRAIN TO IMPROVE YOUR MEMORY. AURA, 2019.
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