Frei, B., & Head, H. (1989). The Guinness book of answers: The complete reference handbook.
Chicago Edition CitationFrei, Beatrice, and Honor Head. The Guinness Book of Answers: The Complete Reference Handbook. London, Guinness Publishing, 1989.
MLA Edition CitationFrei, Beatrice, and Honor Head. The Guinness Book of Answers: The Complete Reference Handbook. 1989.
Warning: These citations may not always be 100% accurate.