How can I cite the quote "whatever goes upon two legs is an enemy" in Animal Farm?

This quote can be found in George Orwell's "Animal Farm" in chapter 2, page 21. It is part of the Seven Commandments, a list of rules the animals of the farm created after they took over the farm. Of course, all these rules are broken throughout the novel. 

The whole quote is:

"The Seven Commandments

1.Whatever goes upon two legs is an enemy.

2. Whatever goes upon four legs, or has wings, is a friend.

3. No animal shall wear clothes.

4. No animal shall sleep in a bed. 

5. No animal shall drink alcohol.

6. No animal shall kill any other animal. 

7. All animals are equal."

An MLA citation of the novel is: 

Orwell, George. Animal Farm: Page 22. New York: Harcourt, Brace, 1954. Print.