O'Sullivan. American Organic. University Press of Kansas.
芝加哥风格引文O'Sullivan. American Organic. University Press of Kansas.
MLA引文O'Sullivan. American Organic. University Press of Kansas.
警告：这些引文格式不一定是100％准确.
APA引文
O'Sullivan. American Organic. University Press of Kansas.
芝加哥风格引文O'Sullivan. American Organic. University Press of Kansas.
MLA引文O'Sullivan. American Organic. University Press of Kansas.