Reader''s Digest. (2002). Life touched with wonder: The blessings of nature. Reader's Digest Association.
Cita Chicago (17th ed.)Reader''s Digest. Life Touched with Wonder: The Blessings of Nature. Pleasantville: Reader's Digest Association, 2002.
Cita MLA (9th ed.)Reader''s Digest. Life Touched with Wonder: The Blessings of Nature. Reader's Digest Association, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.