Cita APA (7a ed.)

Blake, N. M., & Barck, O. T. J. (1960). The United States in its world relations. McGraw-Hill.

Cita Chicago Style (17a ed.)

Blake, Nelson Manfred, y Oscar Theodore Jr Barck. The United States in Its World Relations. New York: McGraw-Hill, 1960.

Cita MLA (9a ed.)

Blake, Nelson Manfred, y Oscar Theodore Jr Barck. The United States in Its World Relations. McGraw-Hill, 1960.