Cita APA (7a ed.)

ebrary, Inc, Lewis, D. S., & Slater, W. (2013). The annual register: World events 2012. ProQuest.

Cita Chicago Style (17a ed.)

ebrary, Inc, D. S. Lewis, y Wendy Slater. The Annual Register: World Events 2012. Ann Arbor, Mich.: ProQuest, 2013.

Cita MLA (9a ed.)

ebrary, Inc, et al. The Annual Register: World Events 2012. ProQuest, 2013.