Zou, W., & Schechter, M. Critical point theory and its applications.
芝加哥风格引文Zou, Wenming, 与 Martin Schechter. Critical Point Theory and Its Applications.
MLA引文Zou, Wenming, 与 Martin Schechter. Critical Point Theory and Its Applications.
警告：这些引文格式不一定是100％准确.