Richards, J. D. (2005). The Vikings: A very short introduction. Oxford University Press.
芝加哥风格引文Richards, J. D. The Vikings: A Very Short Introduction. Oxford ; New York: Oxford University Press, 2005.
MLA引文Richards, J. D. The Vikings: A Very Short Introduction. Oxford University Press, 2005.
警告：这些引文格式不一定是100％准确.