Παραπομπή APA

Norris Mc whirter. (1982). Guiness Book of Answers (4th.). Guiness Superlatives.

Παραπομπή Chicago Style

Norris Mc whirter. Guiness Book of Answers. 4th. Middlesex: Guiness Superlatives, 1982.

Παραπομπή MLA

Norris Mc whirter. Guiness Book of Answers. 4th. Guiness Superlatives, 1982.