United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "June 1977," Business Conditions Digest (June 1977) : 100-100. https://fraser.stlouisfed.org/title/43/item/7370/toc/175410 , accessed on April 25, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "June 1977," Business Conditions Digest (June 1977) : 100-100. https://fraser.stlouisfed.org/title/43/item/7370/toc/175410 , accessed on April 25, 2024.