Dean, V. M. (1946). The four cornerstones of peace. McGraw Hill.
Cita Chicago (17th ed.)Dean, Vera Micheles. The Four Cornerstones of Peace. Nueva York: McGraw Hill, 1946.
Cita MLA (9th ed.)Dean, Vera Micheles. The Four Cornerstones of Peace. McGraw Hill, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.