Roberts, A. M. (2009). Something has to happen next. University of Iowa Press.
芝加哥风格引文Roberts, Andrew Michael. Something Has to Happen Next. Iowa City: University of Iowa Press, 2009.
MLA引文Roberts, Andrew Michael. Something Has to Happen Next. University of Iowa Press, 2009.
警告：这些引文格式不一定是100％准确.