APA

Grofton I., . (1995). The Guinness encyclopedia. London: Guinness publishing.

Chicago

Grofton Ian, . 1995. The Guinness encyclopedia. London: Guinness publishing.

Harvard

Grofton I., . (1995). The Guinness encyclopedia. London: Guinness publishing.

MLA

Grofton Ian, . The Guinness encyclopedia. London: Guinness publishing. 1995.