Michaelis, J. U., Haskins, R. W., & Johnston, A. M. (1965). The social sciences: Foundations of the social studies. Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMichaelis, John Udell, Ralph W. Haskins, और Aaron Montgomery Johnston. The Social Sciences: Foundations of the Social Studies. [Boston]: Allyn and Bacon, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMichaelis, John Udell, et al. The Social Sciences: Foundations of the Social Studies. Allyn and Bacon, 1965.
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