APA

Orr L., . (1991). A dictionary of critical theory. New York: Greenwood Press.

Chicago

Orr Leonard, . 1991. A dictionary of critical theory. New York: Greenwood Press.

Harvard

Orr L., . (1991). A dictionary of critical theory. New York: Greenwood Press.

MLA

Orr Leonard, . A dictionary of critical theory. New York: Greenwood Press. 1991.