Cita APA (7th ed.)
Day, A. J., & Hoffman, V. (2000). The annual register: A record of world events 1999. Keesing's Worldwide.
Cita Chicago (17th ed.)
Day, Alan J., i Verena Hoffman. The Annual Register: A Record of World Events 1999. London, [England]: Keesing's Worldwide, 2000.
Cita MLA (9th ed.)
Day, Alan J., i Verena Hoffman. The Annual Register: A Record of World Events 1999. Keesing's Worldwide, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.