Dyfyniad APA

Boehm, D., McWhirter, N., & Russel, A. (1988). Guinness book of world records: 1988.

Dyfyniad Arddull Chicago

Boehm, David, Norris McWhirter, and Alan Russel. Guinness Book of World Records: 1988. Toronto, Bantam Books, 1988.

Dyfyniad MLA

Boehm, David, et al. Guinness Book of World Records: 1988. 1988.

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