Sources of information:
Abrams, M. H. The Norton Anthology of English Literature.
New York; W. W. Norton & Company, Inc., 1993.
Brodeur, Arthur. The Art of Beowulf.Los Angeles; University of California Press; 1959.
Chambers, R. W. Beowulf. (3rd Edition, Cambridge; Cambridge University Press; 1959.
Fulk, R. D. Interpretations of Beowulf. Bloomington; Indiana University Press; 1991.
Williams, David. Cain and Beowulf: A Study In Secular Allegory.
Toronto; University of Toronto Press; 1982.
Illustrations gathered on the internet:
All web sites were gathered February, 1997.
Grendel characters address - http://acf5.nyu.edu/~wqy5183/grendel.html
Fen address - http://www.csis.pace.edu/grendel/proj1d/00.htmll
Grendel address - http://www.uky.edu/~kiernan/BL/kportico.htmll
Grendel address - http://acf5.nyu.edu/~wqy5183/grendel.html
Grendel address - http://www.rci.rutgers.edu/~wcd/grendel.html
Dragon address - http://www.georgetown.edu/irvinemj/english016/beowulf/beowulf.htmll