Grolier international. (1987). Grolier academic encyclopedia: Vol :15. Grolier international, Acamedic American.
芝加哥风格引文Grolier international. Grolier Academic Encyclopedia: Vol :15. USA: Grolier international, Acamedic American, 1987.
MLA引文Grolier international. Grolier Academic Encyclopedia: Vol :15. Grolier international, Acamedic American, 1987.
警告：这些引文格式不一定是100％准确.