Fielding, B. (2008). Optimizing Your Brain Memory: Melejitkan Daya Ingat. Quills Book.
Lua i Stíl Chicago (17ú heag.)Fielding, Betty. Optimizing Your Brain Memory: Melejitkan Daya Ingat. Quills Book, 2008.
Lua MLA (8ú heag.)Fielding, Betty. Optimizing Your Brain Memory: Melejitkan Daya Ingat. Quills Book, 2008.
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