Lua APA (7ú heag.)

McFarlan, D. e. (1989). The guinness book of records 1990. Guinness Pub. Ltd.

Lua i Stíl Chicago (17ú heag.)

McFarlan, Donald ed. The Guinness Book of Records 1990. Enfield: Guinness Pub. Ltd, 1989.

Lua MLA (9ú heag.)

McFarlan, Donald ed. The Guinness Book of Records 1990. Guinness Pub. Ltd, 1989.

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