Cita APA (7th ed.)
Flexner, S. B. (1971). Reader's Digest: How to increase your word power. Reader's Digest Association.
Cita Chicago (17th ed.)
Flexner, Stuart B. Reader's Digest: How to Increase Your Word Power. Pleasantville, New York: Reader's Digest Association, 1971.
Cita MLA (9th ed.)
Flexner, Stuart B. Reader's Digest: How to Increase Your Word Power. Reader's Digest Association, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.