Dyfyniad APA

Lewis, D. S., & Slater, W. (2008). The annual register: World events 2007. ProQuest.

Dyfyniad Arddull Chicago

Lewis, D. S., and Wendy Slater. The Annual Register: World Events 2007. Bethesda, Maryland: ProQuest, 2008.

Dyfyniad MLA

Lewis, D. S., and Wendy Slater. The Annual Register: World Events 2007. ProQuest, 2008.

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