Berry, T. (1987). Peace among peoples through peace with the earth.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBerry, Thomas. Peace Among Peoples Through Peace with the Earth. 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBerry, Thomas. Peace Among Peoples Through Peace with the Earth. 1987.
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