Bulletin of the Pan American Union.
芝加哥风格引文Bulletin of the Pan American Union.
MLA引文Bulletin of the Pan American Union.
警告：这些引文格式不一定是100％准确.
APA引文
Bulletin of the Pan American Union.
芝加哥风格引文Bulletin of the Pan American Union.
MLA引文Bulletin of the Pan American Union.