APA
Irving E. B., . (1989). Rereading Beowulf. USA: University of Pennsylvania Press.
Chicago
Irving Edward B, . 1989. Rereading Beowulf. USA: University of Pennsylvania Press.
Harvard
Irving E. B., . (1989). Rereading Beowulf. USA: University of Pennsylvania Press.
MLA
Irving Edward B, . Rereading Beowulf. USA: University of Pennsylvania Press. 1989.