APA

Hart M. K., . (1939). America, look at Spain. New York: P. J. Kenedy & sons.

Chicago

Hart Merwin Kimball, . 1939. America, look at Spain. New York: P. J. Kenedy & sons.

Harvard

Hart M. K., . (1939). America, look at Spain. New York: P. J. Kenedy & sons.

MLA

Hart Merwin Kimball, . America, look at Spain. New York: P. J. Kenedy & sons. 1939.