APA

(2011). The New York Times guide to essential knowledge. New York: St. Martin's Press.

Chicago

2011. The New York Times guide to essential knowledge. New York: St. Martin's Press.

Harvard

(2011). The New York Times guide to essential knowledge. New York: St. Martin's Press.

MLA

The New York Times guide to essential knowledge. New York: St. Martin's Press. 2011.