Wordsworth stated that Romantic poetry was marked by a "spontaneous overflow of powerful feelings" (263). When the author's name is included in the sentence, the name does not appear in the parenthetical citation.
Wordsworth extensively explored the role of emotion in the creative process (263). Even if you are summarizing or paraphrasing, you still need a parenthetical citation.
An anonymous Wordsworth critic once argued that his poems were too emotional ("Wordsworth Is a Loser" 100). If the source does not have an author, use an abbreviation of the title.