APA

Wright G., Mejia A., . (1963). An age of controversy: discussion problems in twentieth century European history. New York: Dodd, Mead.

Chicago

Wright Gordon, Mejia Arthur, . 1963. An age of controversy: discussion problems in twentieth century European history. New York: Dodd, Mead.

Harvard

Wright G., Mejia A., . (1963). An age of controversy: discussion problems in twentieth century European history. New York: Dodd, Mead.

MLA

Wright Gordon, Mejia Arthur, . An age of controversy: discussion problems in twentieth century European history. New York: Dodd, Mead. 1963.