APA (7th ed.) Citation

Youngson, D. R. M. (1994). The guiness encyclopedia of the human being. Guiness Publishing.

Chicago Style (17th ed.) Citation

Youngson, Dr Robert M. The Guiness Encyclopedia of the Human Being. Middlesex, EN: Guiness Publishing, 1994.

MLA (9th ed.) Citation

Youngson, Dr Robert M. The Guiness Encyclopedia of the Human Being. Guiness Publishing, 1994.