References
- Crafton, John Michael. "Hughes's Crow's First Lesson." Explicator 46.(1988): 32–34. Humanities Full Text (H.W. Wilson). Web. 8 May 2012
- Cox, Brian. "Ted Hughes, 1930-1998." Critical Quarterly 15 April 1999: 1. Biography Reference Bank (H.W. Wilson). Web. 8 May 2012.
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