movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer
Read the following excerpt from a reference list.
Crum, M. (2013, September 22). 7 reasons your favorite books were banned.
According to APA style, what citation element belongs in the blank?
edited by the American Civil Liberties Union
O Huffington Post
http://www.huffingtonpost.com/2013/09/22/banned-books_n_3961834.html.
by Jonathan Silver