APA-referens

Marshall, J. (1971). guinness book of air: Facts and feats. Guinness Superlative.

Chicago-stil citat

Marshall, John. Guinness Book of Air: Facts and Feats. Middlesex: Guinness Superlative, 1971.

MLA-referens

Marshall, John. Guinness Book of Air: Facts and Feats. Guinness Superlative, 1971.

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