Cita APA (7th ed.)
Day, A. J., & Hoffman, V. (1999). The annual register: A record of world events 1998. Keesing's Worldwide.
Cita Chicago (17th ed.)
Day, Alan J., i Verena Hoffman. The Annual Register: A Record of World Events 1998. Rockville, Maryland: Keesing's Worldwide, 1999.
Cita MLA (9th ed.)
Day, Alan J., i Verena Hoffman. The Annual Register: A Record of World Events 1998. Keesing's Worldwide, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.