APA (7th ed.) Citation

Reader's Digest Association & Harvey, E. H. (1987). Reader's Digest Book of Facts. Reader's Digest.

Chicago Style (17th ed.) Citation

Reader's Digest Association and Edmund H. Harvey. Reader's Digest Book of Facts. London: Reader's Digest, 1987.

MLA (9th ed.) Citation

Reader's Digest Association and Edmund H. Harvey. Reader's Digest Book of Facts. Reader's Digest, 1987.