Heap, S. (1984). As the twig is bent: Political essays. Fringe Press.
芝加哥风格引文Heap, Susan. As the Twig Is Bent: Political Essays. Dunedin [N.Z.]: Fringe Press, 1984.
MLA引文Heap, Susan. As the Twig Is Bent: Political Essays. Fringe Press, 1984.
警告：这些引文格式不一定是100％准确.
