Write the name of the essay's author as such: Iris, Julissa.
Include the title of the article within quotation marks, such as: "Dog Story."
Italicize the title of the collection: Literature: The Human Experience.
Cite the editor involved in the work after the title of the collection: Ed. Margaret Smith.
Reference the relevant publisher information, including city of publication, as well as the year and page numbers referenced, such as: Ontario: Oni Press, 2004. 225-60.
Put it all together as so:
Iris, Julissa. "Dog Story." Literature: The Human Experience. Ed. Margaret Smith. Ontario: Oni Press, 2004. 225-60.