APA Edition Citation

Gould, D. E. (1997). Guinness book of the 20th century.

Chicago Edition Citation

Gould, David; Ed. Guinness Book of the 20th Century. London, Guinness Publishing Ltd, 1997.

MLA Edition Citation

Gould, David; Ed. Guinness Book of the 20th Century. 1997.

Warning: These citations may not always be 100% accurate.