Excerpts from the 1938 edition of Understanding Poetry by Cleanth Brooks and Robert Penn Warren (one of the classic texts of formalist criticism) (
http://www.english.upenn.edu/~afilreis/50s/understanding-poetry.html
)
Critic Helen Vendler's close reading of Shakespeare's sonnet #30 (
http://shakespeare.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.hup.harvard.edu...
)