Kettner, F. (1936). The need for a secretary of peace. Biosophical Institute.
Chicago Style (17. basım) AtıfKettner, Frederick. The Need for a Secretary of Peace. New York, N.Y.: Biosophical Institute, 1936.
MLA (8th ed.) AtıfKettner, Frederick. The Need for a Secretary of Peace. Biosophical Institute, 1936.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..