Dyfyniad APA

Norris D. McWhirter. (1983). Guinness book of records (30th.). Guinness Superlatives.

Dyfyniad Arddull Chicago

Norris D. McWhirter. Guinness Book of Records. 30th. Enfield: Guinness Superlatives, 1983.

Dyfyniad MLA

Norris D. McWhirter. Guinness Book of Records. 30th. Guinness Superlatives, 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.