APA

Hayes C. J. H., . (1951). The United States and Spain. New York: Sheed & Ward.

Chicago

Hayes Carlon J H, . 1951. The United States and Spain. New York: Sheed & Ward.

Harvard

Hayes C. J. H., . (1951). The United States and Spain. New York: Sheed & Ward.

MLA

Hayes Carlon J H, . The United States and Spain. New York: Sheed & Ward. 1951.