Dyfyniad APA

Guinness World Records Limited., & Glenday, C. (2007). Guinness world records 2008. [New York]: Guinness World Records.

Dyfyniad Arddull Chicago

Guinness World Records Limited., and Craig Glenday. Guinness World Records 2008. [New York]: Guinness World Records, 2007.

Dyfyniad MLA

Guinness World Records Limited., and Craig Glenday. Guinness World Records 2008. [New York]: Guinness World Records, 2007.

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