Bogue, D. J., & Beale, C. L. (1961). Economic areas of the United States: A comprehensive statistical and descriptive analysis of socioeconomic characteristics. Glencoe, IL: The Free Press of Glencoe.
Παραπομπή Chicago StyleBogue, Donald Joseph, and Calvin L. Beale. Economic Areas of the United States: A Comprehensive Statistical and Descriptive Analysis of Socioeconomic Characteristics. Glencoe, IL: The Free Press of Glencoe, 1961.
Παραπομπή MLABogue, Donald Joseph, and Calvin L. Beale. Economic Areas of the United States: A Comprehensive Statistical and Descriptive Analysis of Socioeconomic Characteristics. Glencoe, IL: The Free Press of Glencoe, 1961.
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