Day, A. J., & Hoffman, V. (1989). The annual register: A record of world events, 1988. Longman.
芝加哥风格引文Day, Alan J., 与 Verena Hoffman. The Annual Register: A Record of World Events, 1988. Essex, England: Longman, 1989.
MLA引文Day, Alan J., 与 Verena Hoffman. The Annual Register: A Record of World Events, 1988. Longman, 1989.
警告：这些引文格式不一定是100％准确.