Dyfyniad APA

Norris McWhirter. (1955). Guinness book of records (25th.). Guinness Superlatives.

Dyfyniad Arddull Chicago

Norris McWhirter. Guinness Book of Records. 25th. Middlesex: Guinness Superlatives, 1955.

Dyfyniad MLA

Norris McWhirter. Guinness Book of Records. 25th. Guinness Superlatives, 1955.

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