(1990). Selected annotated bibliography on essential drugs <i>es</i>.
芝加哥风格引文Selected Annotated Bibliography on Essential Drugs <i>es</i>. 1990.
MLA引文Selected Annotated Bibliography on Essential Drugs <i>es</i>. 1990.
警告：这些引文格式不一定是100％准确.
APA引文