Quirino, E. The challenge of our times.
芝加哥风格引文Quirino, Elpidio. The Challenge of Our Times.
MLA引文Quirino, Elpidio. The Challenge of Our Times.
警告：这些引文格式不一定是100％准确.
APA引文
Quirino, E. The challenge of our times.
芝加哥风格引文Quirino, Elpidio. The Challenge of Our Times.
MLA引文Quirino, Elpidio. The Challenge of Our Times.