(2005). 101 ways to improve your memory. Reader's Digest.
Cita Chicago (17th ed.)101 Ways to Improve Your Memory. New York ; Hong Kong: Reader's Digest, 2005.
Cita MLA (8th ed.)101 Ways to Improve Your Memory. Reader's Digest, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.