APA ציטוט

Irwin,Christopher. (2000). Guinness world records 2001. Guinnes world research records Ltd.

Chicago Edition Citation

Irwin,Christopher. Guinness World Records 2001. London: Guinnes world research records Ltd, 2000.

ציטוט MLA

Irwin,Christopher. Guinness World Records 2001. Guinnes world research records Ltd, 2000.