Reader's Digest Association. (1986). Reader's Digest book of facts (1st ed., second reprint with amendments.). Reader's Digest Services.
Chicago Style (17th ed.) CitationReader's Digest Association. Reader's Digest Book of Facts. 1st ed., second reprint with amendments. London: Reader's Digest Services, 1986.
MLA (9th ed.) CitationReader's Digest Association. Reader's Digest Book of Facts. 1st ed., second reprint with amendments. Reader's Digest Services, 1986.
Warning: These citations may not always be 100% accurate.