Παραπομπή APA

Norris & Ross. (1974). Guinness book of records (21st.). Guiness Superlatives.

Παραπομπή Chicago Style

Norris και Ross. Guinness Book of Records. 21st. Middlesex: Guiness Superlatives, 1974.

Παραπομπή MLA

Norris και Ross. Guinness Book of Records. 21st. Guiness Superlatives, 1974.