Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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