What is incorrect about the following summarized passage?

Bissinger discussed the obsession with American football (2011, para. 2).

Question

What is incorrect about the following summarized passage? 

Bissinger discussed the obsession with American football (2011, para. 2).

anonymous · Answer

No comma is needed after the publication year.
       The author’s name should be included in the parentheses instead of in the sentence.
       The year of publication should go after the author’s name in the sentence: Bissinger