APA (7th ed.) Citation

Crofton, I. (1990). The Guinness encyclopedia. Guiness Publishing.

Chicago Style (17th ed.) Citation

Crofton, Ian،. The Guinness Encyclopedia. London: Guiness Publishing, 1990.

MLA (9th ed.) Citation

Crofton, Ian،. The Guinness Encyclopedia. Guiness Publishing, 1990.

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