Smith, N. B., Hart, H. C., & Baker, C. B. (1964). Beyond the horizon (Teacher's edition.). The Bobbs-Merrill Company, Inc., a subsidiary of Howard W. Sams & Co., Inc. Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmith, Nila Banton, Hazel C. Hart, और Clara Belle Baker. Beyond the Horizon. Teacher's edition. Indianapolis ; New York: The Bobbs-Merrill Company, Inc., a subsidiary of Howard W. Sams & Co., Inc. Publishers, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSmith, Nila Banton, et al. Beyond the Horizon. Teacher's edition. The Bobbs-Merrill Company, Inc., a subsidiary of Howard W. Sams & Co., Inc. Publishers, 1964.
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