Reader's Digest Association. (1994). Nature's masterpieces. Reader's Digest.
Chicago Style (17th ed.) CitationReader's Digest Association. Nature's Masterpieces. London: Reader's Digest, 1994.
MLA (9th ed.) CitationReader's Digest Association. Nature's Masterpieces. Reader's Digest, 1994.
Warning: These citations may not always be 100% accurate.