Day, A. J., & Hoffman, V. (2000). The annual register: A record of world events 1999. Keesing's Worldwide.
芝加哥风格引文Day, Alan J., 与 Verena Hoffman. The Annual Register: A Record of World Events 1999. London, [England]: Keesing's Worldwide, 2000.
MLA引文Day, Alan J., 与 Verena Hoffman. The Annual Register: A Record of World Events 1999. Keesing's Worldwide, 2000.
警告：这些引文格式不一定是100％准确.