What does this Works Cited entry indicate about the cited work?
"Taxes Introduction." Shmoop. Shmoop University, n.d. Web. 2 Jan. 2014.

 - It is a print source.
 - It is a review.
 - It is an online source.
Look closely at the Works Cited entry:
"Taxes Introduction." Shmoop. Shmoop University, n.d. Web. 2 Jan. 2014.
You can tell that the cited work is an online source because "Web" is listed as the medium of publication.