Villegas, B. M. (1983). Strategies for crisis. Center for Research and Communication.
芝加哥风格引文Villegas, Bernardo M. Strategies for Crisis. [Pasig, Metro Manila]: Center for Research and Communication, 1983.
MLA引文Villegas, Bernardo M. Strategies for Crisis. Center for Research and Communication, 1983.
警告：这些引文格式不一定是100％准确.